Add timeout example

[Dorukyum]

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, typehinting, examples, ...)

[hypergonial]

Shouldn't it be datetime.datetime.now(datetime.timezone.utc) or discord.utils.utcnow()? Otherwise it may not be timezone aware.

[BobDotCom]

Please add an example of the new method I'm adding (momentarily in a pull request)

[hypergonial]

datetime.datetime.utcnow() still produces a naive-datetime, for this to be timezone-aware, please see my suggestions.

done