[Chapel Merge] Added a link to our code of conduct on Docs for Co

Branch: refs/heads/main
Revision: f0d209e
Author: mstrout
Link: Code of conduct link by mstrout · Pull Request #19809 · chapel-lang/chapel · GitHub
Log Message:

Merge pull request #19809 from mstrout/codeOfConductLink

Added a link to our code of conduct on Docs for Contributors page. I also updated the developer/bestPractices/buildingdocs.html page to clarify how to add an external link in a .rst file.

[reviewed by @mppf, thanks!]

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

M doc/rst/developer/index.rst

Compare: https://github.com/chapel-lang/chapel/compare/f0ff3bbffaf6...f0d209e0044e