Fix sphinx-lint after #31097 and b878b3a

[sobolevn]

main branch is failing, see https://dev.azure.com/python/cpython/_build/results?buildId=96616&view=logs&j=4db1505a-29e5-5cc0-240b-53a8a2681f75&t=a975920c-8356-5388-147c-613d5fab0171

Logs:

PATH=./venv/bin:$PATH sphinx-lint -i tools -i ./venv -i README.rst
No problems found.
PATH=./venv/bin:$PATH sphinx-lint ../Misc/NEWS.d/next/
[1] ../Misc/NEWS.d/next/Library/2022-02-09-00-53-23.[bpo-45863](https://bugs.python.org/issue45863).zqQXVv.rst:0: No newline at end of file (no-newline-at-end-of-file).
[1] ../Misc/NEWS.d/next/Build/2022-01-19-11-08-32.[bpo-46430](https://bugs.python.org/issue46430).k403m_.rst:0: No newline at end of file (no-newline-at-end-of-file).
2 problems with severity 1 found.

This PR fixes these two problems, so main is green again.

Related PR: #31097
CC @JulienPalard

Automerge-Triggered-By: GH:JulienPalard

[JulienPalard]

Oops I should have rebased right before merging this one, I'm looking at it!

[JulienPalard]

Thanks @sobolevn for the fast PR :)

[miss-islington]

@sobolevn: Status check is done, and it's a success ✅ .

[vstinner]

I backported the tarfile change to 3.9 and 3.10, do these branches also need a fix? https://bugs.python.org/issue45863

[vstinner]

main branch is failing, see https://dev.azure.com/python/cpython/_build/results?buildId=96616&view=logs&j=4db1505a-29e5-5cc0-240b-53a8a2681f75&t=a975920c-8356-5388-147c-613d5fab0171

I didn't notice the failure on the PR #29693

Is it because the branch is old (Nov 2021) and was not rebased before being merged? Maybe the strict CI tests were added later?

[sobolevn]

Is it because the branch is old (Nov 2021) and was not rebased before being merged? Maybe the strict CI tests were added later?

Yes, looks like this is the case.

[JulienPalard]

do these branches also need a fix?

I did not backported sphinx-lint to old branch and I don't want to, rstlint does an OK job on those branche, sphinx-lint is very new, main is enough for me.