Follow on from #102513.

To fix #102513 (comment).

The problem is that the https://github.com/Ana06/get-changed-files action gives an error if there's a filename with a space, for example, a news file such as Misc/NEWS.d/next/Core and Builtins/2023-03-17-12-09-45.gh-issue-100982.Pf_BI6.rst.

The error suggests using another format:

Error: One of your files includes a space. Consider using a different output format or removing spaces from your filenames. Please submit an issue on this action's GitHub repo.

We can get in CSV or JSON format instead:

• https://github.com/Ana06/get-changed-files#get-all-added-and-modified-files-as-csv

But that would require some refactoring, as we need to touch the list of files.

The quick fix is to filter for files in the Doc/ directory, to only consider those:

• https://github.com/Ana06/get-changed-files#filtering

It would of course be good to check the NEWS files, but it's less urgent than fixing the CI and unblocking other PRs!

Demo

hugovk#45 is a PR that modifies a Doc/ file plus a Misc/NEWS.d/next/Core and Builtins/ file, and the "Docs / Docs" CI check fails, as expected.

hugovk#44 is the same but also has this change, and "Docs / Docs" passes.

• Issue: Fix all Sphinx reference warnings in the documentation #101100