fix(docs): add further checklist additions

PULL_REQUEST_TEMPLATE.md

@@ -6,9 +6,10 @@ Fixes #\[issue]
 
 ## Type of change
 
-* [ ] Bug fix (non breaking change which fixes an issue)
-* [ ] New feature (non breaking change which adds functionality)
-* [ ] Refactor (non breaking change restructures existing code)
+* [ ] Bug fix (change which fixes an issue)
+* [ ] New feature (change which adds functionality)
+* [ ] New Server (new server added)
+* [ ] Refactor (restructures existing code)
 * [ ] This change requires a documentation update
 
 ## Checklist
@@ -16,6 +17,6 @@ Fixes #\[issue]
 * [ ] My code follows the style guidelines of this project
 * [ ] This pull request links to an issue
 * [ ] This pull request uses the `develop` branch as its base 
-* [ ] I have performed a self review of my own code
+* [ ] I have performed a self-review of my own code
 * [ ] I have commented my code, particularly in hard to understand areas
-* [ ] I have made corresponding changes to the documentation
+* [ ] I have made corresponding changes to the documentation if required