chore: remove typings from PR checklist (#657)

* chore: remove typings from PR template

* chore: instruct to replace irrelevant checkboxes

.github/PULL_REQUEST_TEMPLATE.md

@@ -14,28 +14,24 @@ Please fill out the information below to expedite the review and (hopefully)
 merge of your pull request!
 -->
 
-<!-- What changes are being made? (What feature/bug is being fixed here?) -->
-
 **What**:
-
-<!-- Why are these changes necessary? -->
+<!-- What changes are being made? (What feature/bug is being fixed here?) -->
 
 **Why**:
-
-<!-- How were these changes implemented? -->
+<!-- Why are these changes necessary? -->
 
 **How**:
+<!-- How were these changes implemented? -->
 
-<!-- Have you done all of these things?  -->
 
 **Checklist**:
+<!-- Have you done all of these things?  -->
 
-<!-- add "N/A" to the end of each line that's irrelevant to your changes -->
-<!-- to check an item, place an "x" in the box like so: "- [x] Documentation" -->
+<!-- To check an item, place an "x" in the box like so: "- [x] Documentation" -->
+<!-- If the item is irrelevant to your changes, replace or fill the box with "N/A" -->
 
 - [ ] Documentation
 - [ ] Tests
-- [ ] Typings
 - [ ] Ready to be merged
       <!-- In your opinion, is this ready to be merged as soon as it's reviewed? -->