chore: update link in PR template

.github/pull_request_template.md

@@ -1,4 +1,4 @@
-[Pull Request Etiquette doc](https://github.com/Breakthrough-Energy/REISE/wiki/Pull-Request-Etiquette)
+[Pull Request doc](https://breakthrough-energy.github.io/docs/user/git_guide.html#d-pull-request)
 
 ### Purpose
 What is the larger goal of this change?
@@ -18,4 +18,4 @@ How did you test this change (unit/functional testing, manual testing, etc.)?
 How the code can be used and/or images of any graphs, tables or other visuals (not always applicable). 
 
 ### Time estimate
-How long will it take for reviewers and observers to understand this code change?
+How long will it take for reviewers and observers to understand this code change?