docs: adds configuration template to revert standard naming convention for Azure Pipelines (#20208)

Co-authored-by: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>

lib/modules/manager/azure-pipelines/readme.md

@@ -11,7 +11,23 @@ To opt into running it, set the following:
 }
 ```
 
-It works by container and repository resources from the `resources` block as well as tasks from `steps` blocks.
+In most cases only major version numbers are specified in YAML when referencing a task version: `NodeTool@0`.
+By default, Renovate replaces these with the full version: `NodeTool@0.216.0`.
+
+To use the standard convention for Azure Pipelines, add:
+
+```json
+{
+  "packageRules": [
+    {
+      "matchDatasources": ["azure-pipelines-tasks"],
+      "extractVersion": "^(?<version>\\d+)"
+    }
+  ]
+}
+```
+
+Renovate now updates container and repository resources from the `resources` block, plus tasks from `steps` blocks.
 
 For example: