Harmonize parameter names in the time module documentation and docstrings #155787

@StanFromIreland noticed in the review of GH-155513 that the parameter names in the time module documentation differ from the names used in the docstrings.

All these parameters are positional-only, so the names are not part of the API, but they should not contradict each other.

After GH-155513 they are no longer just a text in the docstring: asctime, ctime, gmtime, localtime and mktime get a real signature, and the METH_O mktime and sleep no longer report the generic ($self, object, /). time_tuple is used there instead of tuple, which shadows a builtin.

There are also two inconsistencies inside the docstrings themselves: the seconds argument of ctime is optional, and the format argument of strptime is optional (it defaults to "%a %b %d %H:%M:%S %Y"), but neither is shown in brackets.

Linked PRs

• gh-155787: Harmonize parameter names in the time module documentation and docstrings #155790
• [3.15] gh-155787: Harmonize parameter names in the time module documentation and docstrings (GH-155790) #155804
• [3.14] gh-155787: Harmonize parameter names in the time module documentation and docstrings (GH-155790) #155806
• [3.13] gh-155787: Harmonize parameter names in the time module documentation and docstrings (GH-155790) #155807
• Harmonize parameter names in time module documentation (gh-155787) #155818