Update .github/workflows/pr-prefix.yml

Co-authored-by: Joongi Kim <[email protected]>

.github/workflows/pr-prefix.yml

@@ -14,6 +14,14 @@ jobs:
           then
             echo "PR title is valid"
           else
-            echo "PR title is invalid"
+            echo "PR title is invalid."
+            echo "Use the title prefixes like:"
+            echo "  feat: (for new features and functionality)"
+            echo "  fix: (for bug fixes and revisions on how things work)"
+            echo "  docs: (for docs, docstring, and comment changes)"
+            echo "  refactor: (for refactoring and revisions on how things are related)"
+            echo "  ci: (for changes related to CI/CD workflows)"
+            echo "  chore(...): (for changes related to repo/build configs, dependencies, etc.)"
+            echo "following the conventional commit style."
             exit 1
           fi