课堂动态接口调整

app/views/weapps/courses/course_activities.json.jbuilder

@@ -6,7 +6,7 @@ json.activities @activities do |activity|
     json.login user.login
     json.img url_to_avatar(user)
   end
-  json.created_at activity.created_at.strftime('%m-%d %H:%M:')
+  json.created_at activity.created_at.strftime('%m-%d %H:%M')
   json.container_name activity.container_name
   json.container_type activity.course_act_type == "HomeworkCommon" ? activity.course_act&.homework_type : ""
 end