fixed 61672d73 from https://gitee.com/jiangkai43/docs/pulls/13166

修改parseURL示例代码
Signed-off-by: Njiangkai43 <jiangkai43@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-url.md

@@ -442,7 +442,8 @@ URL静态成员函数。
 
 ```js
 let mm = 'https://username:password@host:8080';
-Url.URL.parseURL(mm); // Output 'https://username:password@host:8080/';
+let url = Url.URL.parseURL(mm); 
+url.toString(); // Output 'https://username:password@host:8080/';
 ```
 
 ### tostring