update zh-cn/application-dev/quick-start/arkts-localstorage.md.

Signed-off-by: N189******51 <lipeicheng5@huawei.com>

zh-cn/application-dev/quick-start/arkts-localstorage.md

@@ -322,14 +322,14 @@ Child自定义组件中的变化：
 1. playCountLink的刷新会同步回LocalStorage，并且引起兄弟组件和父组件相应的刷新。
 
    ```ts
-class Data {
+   class Data {
      countStorage: number = 0;
-}
-let data: Data = { countStorage: 1 }
-let storage = new LocalStorage(data);
+   }
+   let data: Data = { countStorage: 1 }
+   let storage = new LocalStorage(data);
 
-@Component
-struct Child {
+   @Component
+   struct Child {
      // 子组件实例的名字
      label: string = 'no name';
      // 和LocalStorage中“countStorage”的双向绑定数据
@@ -346,11 +346,11 @@ struct Child {
            .width(200).height(60).fontSize(12)
        }.width(300).height(60)
      }
-}
+   }
 
-@Entry(storage)
-@Component
-struct Parent {
+   @Entry(storage)
+   @Component
+   struct Parent {
      @LocalStorageLink('countStorage') playCount: number = 0;
 
      build() {
@@ -386,7 +386,7 @@ struct Parent {
            .width(300).height(60).fontSize(12)
        }
      }
-}
+   }
    ```