fix comma bug

Author: YaleChen299

lib/cadet/assessments/assessments.ex

@@ -9,12 +9,12 @@ defmodule Cadet.Assessments do
   require Logger
 
   alias Cadet.Accounts.{
-    Notification,
-    Notifications,
-    User,
     CourseRegistration,
     CourseRegistrations,
-    Query
+    Notification,
+    Notifications,
+    Query,
+    User
   }
 
   alias Cadet.Assessments.{Answer, Assessment, Query, Question, Submission, SubmissionVotes}