[Docs] Clarify that "Keywords" page is an API reference for setuptools.setup

[pradyunsg]

Summary

https://setuptools.readthedocs.io/en/latest/references/keywords.html has no indicators what those keywords are for.

It also doesn't show up if you search for "setuptools.setup" in the sidebar search, and is generally innaccessible via search engines as well. It also has poor formatting, likely due to mismanaged indentation on the page.

OS / Environment

No response

Additional Information

It would be good to:

• have an introductory section in the page, describing what it is for -- explicitly mention "setuptools.setup" in this as well.
• provide anchors for each of the keyword arguments.
• fix the indentation for the list of various arguments.

Code of Conduct

• I agree to follow the PSF Code of Conduct

[tanvimoharir]

Hi,
I would like to work on this.
Thanks