[docs] [issue36743] Docs: Descript __get__ signature defined differently across the docs

Change by miss-islington <mariatta.wijaya+miss-islington@gmail.com>: ---------- pull_requests: +15265 pull_request: https://github.com/python/cpython/pull/15589 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue36743> _______________________________________