Updated 在线授课接口定义 (markdown)

@@ -34,7 +34,19 @@ Request Params：
 Response：
 
 ```json
-...
+{
+    "student_info": {
+        "student_name": "孙尚香",
+        "goal": "融入美国中学课堂",
+        "word_count": 2800,
+        "read_count": 23000,
+        "listen": "4小时43分",
+        "chat": "3小时18分"
+    },
+    "group_name": "boxfish-class001",
+    "group_id": "@TGS#2AA4BQAEN",
+    "chat_room_id": "100001"
+}
 ```
 
 #### 通知学生开始上课