Update db_purge.py

Author: topunix

management/commands/db_purge.py

@@ -17,7 +17,9 @@ class Command(BaseCommand):
 
     def handle(self, *args, **options):
         total_deleted_records = 0
-        # Define retention policies. Users must add their own values to this dictionary.
+        # ========================================================
+        # ATTENTION: USERS MUST ADD THEIR OWN VALUES TO THIS DICTIONARY
+        # ========================================================
         retention_policies = [
             {
                 'app_name': 'django_app_name_here',