fixup! Add github output-format for GitHub Actions.

Author: fkj

docs/content/Running during CI.md

@@ -75,4 +75,8 @@ This will make the analyzers print their results as [GitHub Workflow Commands](h
 If you for instance have a GitHub Action to run analyzers on every pull request, these annotations will show up in the "Files changed" on the pull request.
 If the annotations don't show correctly, you might need to set the `code-root` to the root of the repository.
 
+Note that GitHub has a hard limit of 10 annotations of each type (notice, warning, error) per CI step.
+This means that only the first 10 errors, the first 10 warnings and the first 10 hints/info results from analyzers will generate annotations.
+The workflow log will contain all analyzer results even if a job hits the annotation limits.
+
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