[docs] [issue26515] Update extending/embedding docs to new way to build modules in C

Petr Viktorin <encukou@gmail.com> added the comment: PEP 630 is now Active. I believe the vast majority of modules can now be ported, and it should be helpful for early adopters (including CPython stdlib). But there are still Open Issues and the API not battle-tested on all the edge cases. The PEP is written to be easily integrated into official docs when the time comes. ---------- _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue26515> _______________________________________