DOC: Add index/label details in data table representation

[gnkl]

• closes DOC: Expand data table respresentation #62358 (Replace xxxx with the GitHub issue number)
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.
• Added type annotations to new arguments/methods/functions.
• Added an entry in the latest doc/source/whatsnew/vX.X.X.rst file if fixing a bug or adding a new feature.

This PR updates the data table to include index/label details (link to relevant docs).
We could also consider the following:

• updating the series table representation (on the same doc) to include index as well.
• maybe link index for more info here.

[gnkl]

@afeld wanted to make sure this is on your radar, review when available 🙂

[afeld]

Hey, apologies for the slow response. Nice work! Mind making the following match (or at least similar to) what was there before?

• Font weight
• Fill colors

[gnkl]

I think it looks better now, let me know your opinion @afeld

[afeld]

Sorry for taking so long to get back to you, this looks great, thanks! (Will need to wait for a Core Team member to merge.)

[gnkl]

thanks @afeld, I'll wait for somebody to merge