Clarified documentation note on module-level convenience functions.
Merged documentation update from 3.3.
Added cookbook entry on alternative formatting styles.
Merged documentation update from 3.3.
asyncio: Fix a typo in CoroWrapper

__slot__ => __slots__
asyncio: Fix CoroWrapper (fix my previous commit)

Add __name__ and __doc__ to __slots__
Closes #20235: Report file and line on unexpected exceptions in Argument Clinic.