Update PULL_REQUEST_TEMPLATE.md

Correct checklist item and make the UI type of change consistent with all others.

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,10 +4,10 @@ Fixes #(issue)
 
 ## Type of change
 
-Please delete options that are not relevant.
+Please delete any options that are not relevant.
 
 - Bug fix (non-breaking change which fixes an issue)
-- User Interface
+- User interface (UI)
 - New feature (non-breaking change which adds functionality)
 - Breaking change (fix or feature that would cause existing functionality to not work as expected)
 - Translation update
@@ -18,7 +18,7 @@ Please delete options that are not relevant.
 
 - [ ] My code follows the style guidelines of this project
 - [ ] I ran ESLint and other linters for modified files
-- [ ] I have performed a self-review of my own code and test it
+- [ ] I have performed a self-review of my own code and tested it
 - [ ] I have commented my code, particularly in hard-to-understand areas
 - [ ] My changes generate no new warnings
 - [ ] My code needed automated testing. I have added them (this is optional task)