添加了轮播图

src/main/java/com/greenorange/promotion/constant/UserConstant.java

@@ -59,7 +59,12 @@ public interface UserConstant {
     String STAFF_ROLE = "staff";
 
     /**
-     * 申请通知
+     * 员工申请须知
      */
     String APPLY_NOTICE_KEY = "applyNotice";
+
+    /**
+     * 课程购买须知
+     */
+    String COURSE_DESC_KEY = "courseDesc";
 }