Updated 教师偏好设置接口 (markdown)

@@ -19,15 +19,14 @@
 ```json
 ```json
 
 
 {
 {
-  "id": 6,
-  "userId": 5,
-  "fitGrade": "初一",
-  "publication": "人教2012版",
-  "book": "七上",
-  "difficulty": "1,2,3",
-  "updateTime": "2015-07-29T09:33:33.496+0000"
+  "relation_material": "人教2012版-七上",
+  "difficulties": [
+    "1",
+    "2",
+    "3"
+  ],
+  "fit_grade": "初一"
 }
 }
-
 ```
 ```
 ######设置失败情况1
 ######设置失败情况1