chore: update PR template

Author: d-koppenhagen

PULL_REQUEST_TEMPLATE.md

@@ -24,6 +24,8 @@
 - [ ] Bug fix (non-breaking change that fixes an issue)
 - [ ] New feature (non-breaking change that adds functionality)
 - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation Update
+- [ ] Other (Tooling, Dependency Updates, etc.)
 
 ## Checklist: