gh-67512: Document parameters of imaplib's append

[Rajendra1308]

The IMAP4.append() method was not properly documented which led to various issues in terms of proper usage of the functions. This change solved the #67512

• Issue: [doc] mention that flags arg to imaplib's append should be a string #67512

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📚 Documentation preview 📚: https://cpython-previews--113506.org.readthedocs.build/en/113506/library/imaplib.html#imaplib.IMAP4.append

[hugovk]

Tip: you can add these suggestions to a batch and commit them all at once. See:

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/incorporating-feedback-in-your-pull-request#applying-suggested-changes

[hugovk]

If you click "Details" next to the failed lint check, you'll see a "trim trailing whitespace" check failed:

So let's delete these bits of trailing whitespace.

[bedevere-app]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[Rajendra1308]

Hey @hugovk, I have made the changes according to the suggestions, also for the format of data_time, whenever I come across new stuff I try to learn it through books or ChatGPT but I guess the latter fails to get correct information sometimes. Thanks for pointing out the error, will keep it in mind in future. :)

[hugovk]

Yep, we have to be careful with ChatGPT, it can invent things. Books should be more trustworthy, unless they're written by LLMs!

[Rajendra1308]

Hey @hugovk, I think the branch is now ready for merge. Let me know if not!

Thank you for the update! Looks good now, I'll leave it to a subject matter expert from the email-team to give it a final review and merge.

[vadmium]

The \Recent flag is supposed to be managed automatically by the server. It seems misleading to list it under the append method.

[python-cla-bot]

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