Update the formatting of the PR template (#798)

* update formatting

* Add comment underneath "Why is this change needed?"

Co-authored-by: Kendall Pinto <kendalldoescoding@gmail.com>

* Link to CONTRIBUTING.md

Co-authored-by: Kendall Pinto <kendalldoescoding@gmail.com>

* Add <!--issue--no-->

Co-authored-by: Kendall Pinto <kendalldoescoding@gmail.com>

* Add `I` before `have read`.

* Change text

Co-authored-by: Kendall Pinto <kendalldoescoding@gmail.com>

.github/pull_request_template.md

@@ -1,10 +1,10 @@
-# Related Issue/Addition to code
+### Related Issue/Addition to code
 <!-- Please delete options that are not relevant. -->
 
-- Fixes #
-- Issue/Addition to code, goes here.
+- Fixes #<!--issue-no-->
+- Addition to code.
 
-## Type of change
+#### Type of change
 
 <!-- Please delete options that are not relevant. -->
 
@@ -13,26 +13,30 @@
 - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
 - [ ] This change requires a documentation update
 
-# Proposed Changes
+### Proposed Changes
 - change 1
 - change 2
 
-# Additional Info
+### Why is this change needed?
+<!-- How will this change benefit YT-Spammer-Purge? --> 
+It's needed because...
+
+### Additional Info
 - any additional info for context
 
-## Checklist:
+### Checklist:
 
-- [ ] My code follows the style guidelines of this project and have read CONTRIBUTING.md
+- [ ] My code follows the style guidelines of this project and I have read [CONTRIBUTING.md](/CONTRIBUTING.md)
 - [ ] 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
 - [ ] 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
 - [ ] Any dependent changes have been merged and published in downstream modules
 - [ ] I have checked my code and corrected any misspellings
 
-# Screenshots
+---
+
+### Screenshots
 
 Original | Updated
 :----------------------:|:-----------: