fix: fixed lint errors

Author: eemaanamir

lms/djangoapps/bulk_email/signals.py

@@ -44,7 +44,7 @@ def ace_email_sent_handler(sender, **kwargs):
     user_id = recipient.get('user_id', None)
     channel = message.get('channel', None)
     course_id = context.get('course_id', None)
-    message_language = message.get('message_language', None),
+    message_language = message.get('message_language', None)
     translation_language = message.get('translation_language', None)
     if not course_id:
         course_email = context.get('course_email', None)