fixed 0ee7e2f4 from https://gitee.com/zhuzijia/docs/pulls/20708

localStroge
Signed-off-by: Nzhuzijia <zhuzijia@huawei.com>
Change-Id: I39f0d8bc5f8e946271fb896d99a4ec4016081314

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

@@ -306,7 +306,7 @@ struct CompA {
 
 先看Parent自定义组件中发生的变化：
 
-1. 点击“countStorage ${this.playCount} incr by 1”，this.playCount减1，修改同步回LocalStorage中，Child组件中的playCountLink绑定的组件会同步刷新；
+1. 点击“playCount ${this.playCount} dec by 1”，this.playCount减1，修改同步回LocalStorage中，Child组件中的playCountLink绑定的组件会同步刷新；
 
 2. 点击“countStorage ${this.playCount} incr by 1”，调用LocalStorage的set接口，更新LocalStorage中“countStorage”对应的属性，Child组件中的playCountLink绑定的组件会同步刷新；