fix(docker): update old docs link

Closes #1977

lib/config/templates/docker-digest-group/pr-body.hbs

-This Pull Request updates Dockerfiles to the latest image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker
+This Pull Request updates Dockerfiles to the latest image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker
 
 {{#if schedule}}
 **Note**: This PR was created on a configured schedule ("{{{schedule}}}"{{#if timezone}} in timezone `{{{timezone}}}`{{/if}}) and will not receive updates outside those times.

lib/config/templates/docker-digest/pr-body.hbs

-This Pull Request updates Docker base image `{{{depName}}}:{{{currentTag}}}` to the latest digest (`{{{newDigest}}}`). For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker
+This Pull Request updates Docker base image `{{{depName}}}:{{{currentTag}}}` to the latest digest (`{{{newDigest}}}`). For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker
 
 {{#if schedule}}
 **Note**: This PR was created on a configured schedule ("{{{schedule}}}"{{#if timezone}} in timezone `{{{timezone}}}`{{/if}}) and will not receive updates outside those times.

lib/config/templates/docker-pin-group/pr-body.hbs

-This Pull Request pins Dockerfiles to use image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker
+This Pull Request pins Dockerfiles to use image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker
 
 {{#if schedule}}
 **Note**: This PR was created on a configured schedule ("{{{schedule}}}"{{#if timezone}} in timezone `{{{timezone}}}`{{/if}}) and will not receive updates outside those times.

lib/config/templates/docker-pin/pr-body.hbs

 This Pull Request pins Docker base image `{{{depName}}}:{{{currentTag}}}` to use a digest (`{{{newDigest}}}`).
-This digest will then be kept updated via Pull Requests whenever the image is updated on the Docker registry. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker
+This digest will then be kept updated via Pull Requests whenever the image is updated on the Docker registry. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker
 
 {{#if schedule}}
 **Note**: This PR was created on a configured schedule ("{{{schedule}}}"{{#if timezone}} in timezone `{{{timezone}}}`{{/if}}) and will not receive updates outside those times.

lib/config/templates/docker/pr-body.hbs

-This Pull Request updates Docker base image `{{{depName}}}` from tag `{{{currentTag}}}` to new tag `{{{newTag}}}`. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker
+This Pull Request updates Docker base image `{{{depName}}}` from tag `{{{currentTag}}}` to new tag `{{{newTag}}}`. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker
 
 {{#if schedule}}
 **Note**: This PR was created on a configured schedule ("{{{schedule}}}"{{#if timezone}} in timezone `{{{timezone}}}`{{/if}}) and will not receive updates outside those times.

test/config/__snapshots__/index.spec.js.snap

@@ -58,9 +58,9 @@ Object {
       "commitMessageTopic": "{{{depName}}}:{{{currentTag}}} Docker digest",
       "group": Object {
         "commitMessageTopic": "{{{groupName}}}",
-        "prBody": "This Pull Request updates Dockerfiles to the latest image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#each upgrades as |upgrade|}}\\n-   {{#if repositoryUrl}}[{{upgrade.depName}}]({{upgrade.repositoryUrl}}){{else}}\`{{{depName}}}\`{{/if}}: \`{{upgrade.newDigest}}\`\\n{{/each}}\\n\\n**Important**: Renovate will wait until you have merged this Pin request before creating PRs for any *upgrades*. If you do not wish to pin anything, please update your config accordingly instead of leaving this PR open.\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+        "prBody": "This Pull Request updates Dockerfiles to the latest image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#each upgrades as |upgrade|}}\\n-   {{#if repositoryUrl}}[{{upgrade.depName}}]({{upgrade.repositoryUrl}}){{else}}\`{{{depName}}}\`{{/if}}: \`{{upgrade.newDigest}}\`\\n{{/each}}\\n\\n**Important**: Renovate will wait until you have merged this Pin request before creating PRs for any *upgrades*. If you do not wish to pin anything, please update your config accordingly instead of leaving this PR open.\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
       },
-      "prBody": "This Pull Request updates Docker base image \`{{{depName}}}:{{{currentTag}}}\` to the latest digest (\`{{{newDigest}}}\`). For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+      "prBody": "This Pull Request updates Docker base image \`{{{depName}}}:{{{currentTag}}}\` to the latest digest (\`{{{newDigest}}}\`). For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
     },
     "fileMatch": Array [
       "(^|/)Dockerfile$",
@@ -78,12 +78,12 @@ Object {
       "group": Object {
         "branchTopic": "digests-pin",
         "commitMessageTopic": "{{{groupName}}}",
-        "prBody": "This Pull Request pins Dockerfiles to use image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#each upgrades as |upgrade|}}\\n-   {{#if repositoryUrl}}[{{upgrade.depName}}]({{upgrade.repositoryUrl}}){{else}}\`{{{depName}}}\`{{/if}}: \`{{upgrade.newDigest}}\`\\n{{/each}}\\n\\n**Important**: Renovate will wait until you have merged this Pin request before creating PRs for any *upgrades*. If you do not wish to pin anything, please update your config accordingly instead of leaving this PR open.\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+        "prBody": "This Pull Request pins Dockerfiles to use image digests. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#each upgrades as |upgrade|}}\\n-   {{#if repositoryUrl}}[{{upgrade.depName}}]({{upgrade.repositoryUrl}}){{else}}\`{{{depName}}}\`{{/if}}: \`{{upgrade.newDigest}}\`\\n{{/each}}\\n\\n**Important**: Renovate will wait until you have merged this Pin request before creating PRs for any *upgrades*. If you do not wish to pin anything, please update your config accordingly instead of leaving this PR open.\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
       },
       "groupName": "Docker digests",
-      "prBody": "This Pull Request pins Docker base image \`{{{depName}}}:{{{currentTag}}}\` to use a digest (\`{{{newDigest}}}\`).\\nThis digest will then be kept updated via Pull Requests whenever the image is updated on the Docker registry. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n**Important**: Renovate will wait until you have merged this Pin request before creating PRs for any *upgrades*. If you do not wish to pin anything, please update your config accordingly instead of leaving this PR open.\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+      "prBody": "This Pull Request pins Docker base image \`{{{depName}}}:{{{currentTag}}}\` to use a digest (\`{{{newDigest}}}\`).\\nThis digest will then be kept updated via Pull Requests whenever the image is updated on the Docker registry. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n**Important**: Renovate will wait until you have merged this Pin request before creating PRs for any *upgrades*. If you do not wish to pin anything, please update your config accordingly instead of leaving this PR open.\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
     },
-    "prBody": "This Pull Request updates Docker base image \`{{{depName}}}\` from tag \`{{{currentTag}}}\` to new tag \`{{{newTag}}}\`. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/language-support/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
+    "prBody": "This Pull Request updates Docker base image \`{{{depName}}}\` from tag \`{{{currentTag}}}\` to new tag \`{{{newTag}}}\`. For details on Renovate's Docker support, please visit https://renovatebot.com/docs/docker\\n\\n{{#if schedule}}\\n**Note**: This PR was created on a configured schedule (\\"{{{schedule}}}\\"{{#if timezone}} in timezone \`{{{timezone}}}\`{{/if}}) and will not receive updates outside those times.\\n{{/if}}\\n\\n{{#if hasErrors}}\\n\\n---\\n\\n# Errors\\n\\nRenovate encountered some errors when processing your repository, so you are being notified here even if they do not directly apply to this PR.\\n\\n{{#each errors as |error|}}\\n-   \`{{error.depName}}\`: {{error.message}}\\n{{/each}}\\n{{/if}}\\n\\n{{#if hasWarnings}}\\n\\n---\\n\\n# Warnings\\n\\nPlease make sure the following warnings are safe to ignore:\\n\\n{{#each warnings as |warning|}}\\n-   \`{{warning.depName}}\`: {{warning.message}}\\n{{/each}}\\n{{/if}}",
   },
   "docker-compose": Object {
     "fileMatch": Array [