Updated 在线授课接口定义 (markdown)

@@ -81,4 +81,17 @@ Request Method： GET
   "group_id": "@TGS#2AA4BQAEN",
   "group_id": "@TGS#2AA4BQAEN",
   "chat_room_id": "100001"
   "chat_room_id": "100001"
 }
 }
-```
+```
+
+####课程结束接口
+接口地址：/teaching/student/finish
+Request Method: POST
+
+|参数名    |是否必须   |说明     |
+|----------|----------|--------|
+|lesson_id |是        |课程id  |
+|teacher_id|是        |老师id  |
+
+返回值：
+
+status code：200