[3.13] Fix `make htmllive` target (GH-124219) by miss-islington · Pull Request #124221 · python/cpython

bedevere-app

Allow make -C Doc htmllive to work without manual venv activation

Set PATH to ensure that sphinx-autobuild can find sphinx-build.
(cherry picked from commit 9a6e233)

Co-authored-by: Zachary Ware zach@python.org