[docs] [issue31720] msilib.MSIError is spelled MsiError in documentation

[Roundup Robot]

Change by Roundup Robot <devnull at psf.upfronthosting.co.za>:


----------
pull_requests: +3889

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31720>
_______________________________________