fixed bf9d8b9f from https://gitee.com/ge-yafang/docs/pulls/11171

update zh-cn/application-dev/quick-start/start-with-js-fa.md.
Signed-off-by: N葛亚芳 <geyafang@huawei.com>

zh-cn/application-dev/quick-start/start-with-js-fa.md

@@ -183,6 +183,7 @@
    
    ```js
    // index.js
+   // 导入页面路由模块
    import router from '@ohos.router';
    
    export default {
@@ -200,6 +201,7 @@
    
    ```js
    // second.js
+   // 导入页面路由模块
    import router from '@ohos.router';
    
    export default {