[issue45618] Documentation builds fail with Sphinx 3.2.1

[Ned Deily]

Change by Ned Deily <nad at python.org>:


----------
nosy: +lukasz.langa, mdk, pablogsal
priority: normal -> release blocker
versions: +Python 3.9

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45618>
_______________________________________