update doc api

@@ -90,3 +90,17 @@
     "flagFrozenSchedule": true
     "flagFrozenSchedule": true
 }
 }
 ```
 ```
+
+##### 4. 候选学生列表冻结接口
+
+- URL: {{localhost}}/boxfish-online-card/classOnline/manage/editCandidateStudent
+- Method: POST
+- RequestBody:
+
+```json5
+{
+    "operationAccount": "xxx@b.cn",
+    "flagEnable": false,
+    "classSmallOrderId": 326
+}
+```