Merge branch 'docs-fix-md-syntax-reference' into 'master'

Fix docs lint markdown syntax reference

Closes #218739

See merge request gitlab-org/gitlab!32831

doc/ci/yaml/README.md

@@ -3490,7 +3490,7 @@ script:
 
 The configurtion above will result in `git fetch` being called this way:
 
-```bash
+```shell
 git fetch origin $REFSPECS --depth 50  --prune
 ```