[Chapel Merge] List `numPUs` as an exception to capitalization ru

Branch: refs/heads/main
Revision: bf14ecb
Author: jeremiah-corrado
Link: Unavailable
Log Message:

Merge pull request #20699 from jeremiah-corrado/numPUs-name-exception

List numPUs as an exception to capitalization rule on the Style Guide page. This is the first exception listed there.

Resolves this issue: `locale` module stabilization: the `numPUs` method · Issue #20445 · chapel-lang/chapel · GitHub

[ Reviewed by @riftEmber ] - Thank you!

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

Compare: https://github.com/chapel-lang/chapel/compare/bddeb362fa44...bf14ecb6cd1d