GH-39504: [Docs] Update footer in main sphinx docs with correct attribution

[jorisvandenbossche]

• Closes: [Docs] Update footer in main sphinx docs #39504

[github-actions]

⚠️ GitHub issue #39504 has no components, please add labels for components.

[AlenkaF]

@github-actions crossbow submit preview-docs

[github-actions]

Revision: 781a79a

Submitted crossbow builds: ursacomputing/crossbow @ actions-55649db991

Task	Status
preview-docs

[andygrove]

Thanks @jorisvandenbossche

[AlenkaF]

\n doesn't add a newline. We could try multiline copyright text with comma separated items: https://www.sphinx-doc.org/en/master/usage/configuration.html#confval-copyright like:

copyright = (
    f"2016-{datetime.datetime.now().year} Apache Software Foundation.",
    "Apache Arrow, Arrow, Apache, the Apache feather logo, and the Apache Arrow project logo are either registered",
    "trademarks or trademarks of The Apache Software Foundation in the United States and other countries"
)

but would need to use newer version of Sphinx (7.0.1, sphinx-doc/sphinx#10983). I think we should unpin Sphinx anyways.

Breaking the copyright text into multiple lines would also make it smaller in width and so the text on the right (PyData SphinxTheme text) could be kept all in one line. See http://crossbow.voltrondata.com/pr_docs/39505/

[jorisvandenbossche]

Good point .. the \n indeed doesn't do anything.
Updating sphinx is indeed something we should do, but from looking at that PR, the multiline copyright might not be exactly what we want here, because from the test added in that PR, it seems that it adds the © Copyright to each line then, which we don't want (https://github.com/sphinx-doc/sphinx/pull/10983/files#diff-da24b355349b53e4c8047034767d008e4c2ce9ea6c8933a3acd50d0828f00528)

[jorisvandenbossche]

It's a bit annoying that the layout is not looking good with this long copyright text, but I am afraid that this is only something that can be fixed in the theme (or we could override the footer block in our layout).

Also on mobile it doesn't look good, but that's again an issue with the upstream theme as well.

[AlenkaF]

Oh you are correct. Having © Copyright on each line sure isn't what we want.

[AlenkaF]

Yeah, there is not much we can do about it really.

[raulcd]

Should we merge this?

[AlenkaF]

Yes, will merge 👍

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit 7acbaf4.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details.