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

[Berker Peksag]

Change by Berker Peksag <berker.peksag at gmail.com>:


----------
keywords: +patch
pull_requests: +8177
stage: needs patch -> patch review

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue26515>
_______________________________________