`_CallableGenericAlias` class and `typing.Callable` docstring should be corrected

[hyperkai]

Documentation

*Notes:

• Python 3.14.3
• Related: The explanation of "Annotating callable objects" section should be made better #145577

_CallableGenericAlias class should be corrected for example:

Represent `Callable[argtypes, resulttype]`. -> Represent `Callable[paramtypes, returntype]`.

t_args, t_result = args -> t_params, t_return = args

typing.Callable docstring should be corrected for example:

a function that takes a single parameter -> a function that has a single parameter

... to indicate optional or keyword arguments; -> ... to indicate optional or keyword parameters;

Linked PRs

• gh-145602: Correct _CallableGenericAlias class and typing.Callable docstring #145598