chore: Update Pull Request Template (#66)

pull_request_template.md

@@ -3,24 +3,26 @@
 ## Description
 Please include a summary of the change and why it is needed.
 
-Fixes # (issue)
+Fixes #(issue)
 
 ## Type of change
 
 - [ ] Bug fix (non-breaking change which fixes an issue)
 - [ ] New feature (non-breaking change which adds functionality)
-- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Enhancement (non-breaking change which improves an existing feature or documentation)
+- [ ] Breaking change (fix or feature that would cause existing functionality not to work as expected)
 
 ## How Has This Been Tested?
 Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.
 
 ## Checklist:
-- [ ] I have performed a self-review of my own code
-- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have performed a self-review of my code
+- [ ] I have commented on my code, particularly in hard-to-understand areas
 - [ ] I have made corresponding changes to the documentation
 - [ ] My changes generate no new warnings
 - [ ] I have added tests that prove my fix is effective or that my feature works
 - [ ] New and existing unit tests pass locally with my changes
+- [ ] Pull Request contains one commit. I squash my commits.
 
 ## Screenshots (if appropriate):