[Chapel Merge] Fix online man page bug with double-dash arguments

Branch: refs/heads/master
Revision: f53d87e
Author: bradcray
Log Message:

Merge pull request #17400 from shubhamkmr04/FixedManPagBug

Fix online man page bug with double-dash arguments

[contributed by @shubhamkmr04, reviewed/tested by me]

I have changed the configuration html_use_smartypants to smartquotes in doc/rst/conf.py that was causing this behavior (converting -- to n-dash) on Man page.
Resolve #17385

Modified Files:
M doc/rst/conf.py

Compare: https://github.com/chapel-lang/chapel/compare/97bd91806d53...f53d87e17a56