[#107] Simplified PR template.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,16 +1,15 @@
+Closes #
+
 ## Checklist before requesting a review
 
-- [ ] I have formatted the subject to include ticket number as `[#123] Verb in past tense with dot at the end.`
+- [ ] I have formatted the subject to include ticket number as `[#123] Verb in past tense with a period at the end.`
 - [ ] I have added a link to the issue tracker
 - [ ] I have provided information in `Changed` section about WHY something was done if this was not a normal implementation
-- [ ] I have performed a self-review of my code
-- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have performed a self-review of my code and commented my code, particularly in hard-to-understand areas
 - [ ] I have added tests that prove my fix is effective or that my feature works
 - [ ] I have run new and existing relevant tests locally with my changes, and they passed
 - [ ] I have provided screenshots, where applicable
 
 ## Changed
 
 1.
-
-## Screenshots