[docs] [issue33801] Remove non-ordered dict comment from plistlib

[Andrés Delfino]

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


----------
keywords: +patch
pull_requests: +7120
stage:  -> patch review

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33801>
_______________________________________