Update PR template (#734)

Co-authored-by: Felipe Mello <felipemello@fb.com>

Author: felipemello1

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,8 @@
+- [ ] I have personally reviewed this PR and description before asking others to do so. It meets the quality bar I expect from others. I understand that if this PR is perceived as unverified AI-generated code, it will be closed without further explanation.
+- [ ] I have run tests and confirmed that this code works
+
+---
+
 ## Description
 
 ## Test plan