IssueNo: #I7XEJ4:[新需求]: Rectify the arkts syntax of qs on monthly

Description: Rectify the arkts syntax of qs on monthly
Sig: SIG_ApplicaitonFramework
Feature or Bugfix: Feature
Binary Source: No
Signed-off-by: N189******51 <lipeicheng5@huawei.com>

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

@@ -40,7 +40,7 @@ PersistentStorage和UIContext相关联，需要在[UIContext](../reference/apis/
 2. 在AppStorage获取对应属性：
 
    ```ts
-AppStorage.Get<number>('aProp'); // returns 47
+   AppStorage.Get<number>('aProp'); // returns 47
    ```
 
    或在组件内部定义：