PULL_REQUEST_TEMPLATE standardize case of types of changes

Minor casing issue in the Markdown.

Let us make the entries consistent

Author: jbampton

PULL_REQUEST_TEMPLATE.md

@@ -22,8 +22,8 @@ This PR...
 - [ ] Bug fix (non-breaking change which fixes an issue)
 - [ ] Enhancement (improves an existing feature and functionality)
 - [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
-- [ ] build/CI
-- [ ] test (unit or integration test code)
+- [ ] Build/CI
+- [ ] Test (unit or integration test code)
 
 ### Feature/Enhancement Scale or Bug Severity