[docs] [issue33885] doc Replace "hook function" with "callable" in urllib.request.urlretrieve

[Andrés Delfino]

Change by Andrés Delfino <adelfino at gmail.com>:


----------
pull_requests: +7494

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33885>
_______________________________________