Remove trailing comma

greg/management/commands/import_guests.py

@@ -163,7 +163,7 @@ class Command(BaseCommand):
                 person=person,
                 type=role_type,
             )
-            role.comments = role_data["comment"],
+            role.comments = role_data["comment"]
             role.end_date = self._end_date
             role.save()
             logger.info("updating_existing_role", role=role, sponsor=role.sponsor)