Fix validate PR action (I hope)

Author: Lissy93

.github/workflows/check-contribution.yml

@@ -6,6 +6,7 @@ on:
       - 'git-in-here.yml'
     types:
       - opened
+      - synchronize
 
 permissions:
   pull-requests: write

lib/validate_pr.py

@@ -163,7 +163,7 @@ def make_final_comment(user: str, errors: []) -> str:
     result += f"Thanks for contributing to {REPO_NAME}! 🎉\n"
     if errors:
         errors.reverse()
-        result += "\n\nIn the meantime, I've spotted a few possible issues for you to address:\n"
+        result += "\n\nI've spotted a few possible issues for you to address:\n"
         result += '\n'.join(errors)
         result += (
             "\n\nPlease ensure you've read and followed the "