[Chapel Merge] Trivial orderedSet doc fixes

Branch: refs/heads/master
Revision: e08d2b2
Author: e-kayrakli
Log Message:

Merge pull request #16544 from e-kayrakli/orderedSet-doc-fix

Trivial orderedSet doc fixes

  • Add a link to comparators
  • Highlight the word “orderedSet” in the header comment.

make docs runs successfully

[Reviewed by @dlongnecke-cray]

Modified Files:
M modules/packages/OrderedSet.chpl

Compare: https://github.com/chapel-lang/chapel/compare/0c84e7d874a6...e08d2b20394d