Update PULL_REQUEST_TEMPLATE.md

Author: gaearon

PULL_REQUEST_TEMPLATE.md

@@ -1,10 +1,10 @@
 <!--
 Thank you for sending the PR!
-Here's a small checklist for you:
+If you changed any code, there are just two more things to do:
 
-* Please sign the CLA when the bot asks you to. This lets us accept your contributions!
-* Did you change any code? If you did, **how can we test that your changes work?** Provide us with clear instructions on what you did to verify them. Bonus points for screenshots!
-* If you changed any code, run `npm run format` in the project root folder, and commit and push the changes.
+* Provide us with clear instructions on how you verified your changes work. Bonus points for screenshots!
+
+* If you changed any code, run `npm run format` in the root folder, and commit and push the changes.
 
 Happy contributing!
 -->