[3.8] Touch up venv docs (GH-14922) (GH-14923)



(cherry picked from commit 2f224a077a83ac9de8a12bb7dcc516642b8176d8)


Co-authored-by: Brett Cannon <54418+brettcannon@users.noreply.github.com>

Automerge-Triggered-By: @brettcannon
1 file changed