DOC: fixing GL08 errors for pandas.IntervalIndex.right and pandas.Series.dt

[s1099]

Resolved GL08 errors for the following:

1. scripts/validate_docstrings.py --format=actions --errors=GL08 pandas.IntervalIndex.right
2. scripts/validate_docstrings.py --format=actions --errors=GL08 pandas.Series.dt

xref: #57443

• 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.

[s1099]

pre-commit.ci autofix

[datapythonista]

Do you mind splitting the two docstrings in separate pull requests please? I have some comments, but reviewing them together is not very efficient. Surely feel free to work in the same PR for the right and left methods, since they'll be pretty much the same, but for unrelated docstrings it will force us to review the two of them at each iteration, even when one of them is already finished.

[datapythonista]

Also, since you worked on the main branch, you may want to clone pandas again and start the work in different branches. If you work in main, then any new branch you create to work in different things in parallel will contain the changes you made in main, and you will have unrelated things in the branches. In general you want to make sure you never commit to main and it's synced with the latest main in pandas, so when you create branches you start from the right state of pandas.

I'll close this PR, since you'll have to open new ones from the new branches, but surely happy to review your changes in those.

[s1099]

moved to #57751