fix:线下课创建传参错误问题修复

src/modules/course-manage/offline-course/AddOfflineCourse.jsx

 /*
  * @Author: 吴文洁
  * @Date: 2020-08-05 10:07:47
- * @LastEditors: Please set LastEditors
- * @LastEditTime: 2021-07-18 10:13:42
+ * @LastEditors: yuananting
+ * @LastEditTime: 2021-07-22 17:16:10
  * @Description: 线下课新增/编辑页
  * @Copyright: 杭州杰竞科技有限公司 版权所有
  */
@@ -952,7 +952,7 @@ class AddOfflineCourse extends React.Component {
                           startTimeApply: undefined,
                           endTimeApply: undefined,
                           quota: null,
-                          whetherVisitorsJoin: whetherSetApply !== 'YES' ? whetherVisitorsJoin : false
+                          whetherVisitorsJoin: whetherSetApply !== 'YES' ? whetherVisitorsJoin : 'NO'
                         });
                       }}
                     />