[3.13] gh-118915: Add/fix docs entries for some new 3.13 C API (GH-124134)#124244

Yhg1s merged 2 commits intopython:3.13python/cpython:3.13from

encukou:backport-32119fc-3.13encukou/cpython:backport-32119fc-3.13Copy head branch name to clipboard