[3.13] gh-85222: Document the global start method side effect in multiprocessing (GH-136426)#142771

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

miss-islington:backport-0978b9a-3.13miss-islington/cpython:backport-0978b9a-3.13Copy head branch name to clipboard