[3.13] gh-141004: Document missing `PyCFunction*` and `PyCMethod*` APIs (GH-141253)#141638

ZeroIntensity merged 1 commit intopython:3.13python/cpython:3.13from

miss-islington:backport-be699d6-3.13miss-islington/cpython:backport-be699d6-3.13Copy head branch name to clipboard