DOC: Standardize references to pandas in the documentation

[mroeschke]

In our documentation (files in doc/source/../*.rst), we refer to pandas as Pandas, pandas, and *pandas* (sphinx italics).

For documentation consistency, we should standardize these to one form. pandas is the preferable form in our documentation files.

Unfortunately I don't think we create a lint rule for this pattern since we have to be flexible to references and hyperlinks.

[joybh98]

Can I take this issue?

[ShaharNaveh]

Can I take this issue?

@joybhallaa Sure!
You can do this by commenting the word take (and nothing else, just the word take), and the github bot will assign this issue to you.

[joybh98]

take

[jorisvandenbossche]

We could also decide to just use "pandas" instead of "pandas" (no italic), that's one thing less that you can forget to do.

[mroeschke]

Good point @jorisvandenbossche. I'd prefer pandas as well for that reason. Will update the original post

[mroeschke]

#32439 only fixed the references for development/*.rst