docs: Update PR template (#2731)

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,29 +1,14 @@
-Changes proposed in this PR:
+List of changes proposed in this PR:
 
 -
 
-<!-- SCROLL TO BOTTOM TO AGREE!:
+<!--
 Please use a descriptive title for your PR, it will be included in our changelog!
 
-If you are making changes that you have a conflict of interest with, please
+If you are making changes that you have a conflict of interest with, you MUST
 disclose this as well (this does not disqualify your PR by any means):
 
 Conflict of interest contributions involve contributing about yourself,
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-Any external relationship can trigger a conflict of interest.
+ANY external relationship can trigger a conflict of interest.
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