[Chapel Merge] Refresh GettingStarted.rst

Branch: refs/heads/master
Revision: d1a1a32
Author: bradcray
Log Message:

Merge pull request #16786 from bradcray/refresh-getting-started

Refresh GettingStarted.rst

[trivial, not reviewed]

While reviewing new hire documentation, I found that this file was
feeling pretty stale, yet we still point to it. Took a refresh
pass over it as a result. Note that ultimately, it should probably be
combined with ContributorInfo.rst and the like (issue #16679).

Modified Files:
M doc/rst/developer/bestPractices/GettingStarted.rst

Compare: https://github.com/chapel-lang/chapel/compare/801e47b93584...d1a1a32d0bc5