Updated 首页分类模块学习人数 (markdown)

 ###接口地址
 ````
 /report/catalog/course/student/finished
-````
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+````
+###请求方式
+````
+GET请求
+````
+###返回值
+```
+[{
+  catalog_id:100
+  count:10
+},{
+  catalog_id；101
+  count:20
+}]
+```
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