docs: use titles for more code blocks (#25526)

docs/usage/bazel.md

docs/usage/configuration-options.md

docs/usage/docker.md

docs/usage/examples/self-hosting.md

docs/usage/faq.md

docs/usage/getting-started/private-packages.md

docs/usage/golang.md

docs/usage/java.md

docs/usage/key-concepts/automerge.md

docs/usage/key-concepts/scheduling.md

docs/usage/modules/manager/index.md

docs/usage/node.md

docs/usage/noise-reduction.md

docs/usage/python.md

docs/usage/rust.md

docs/usage/self-hosted-configuration.md

docs/usage/semantic-commits.md

...ge/user-stories/maintaining-aur-packages-with-renovate.md