[docs] [issue35843] importlib.util docs for namespace packages innaccurate

Change by Anthony Sottile <asottile@umich.edu>: ---------- keywords: +patch, patch, patch pull_requests: +11529, 11530, 11531 stage: -> patch review _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue35843> _______________________________________