update zh-cn/application-dev/reference/arkui-ts/ts-container-grid.md.

Signed-off-by: NLiAn <lian15@huawei.com>
Signed-off-by: NLiAn <lian15@huawei.com>

zh-cn/application-dev/reference/arkui-ts/ts-container-grid.md

@@ -215,10 +215,10 @@ struct GridExample {
 
 3.  在[onItemDrop](#事件)中获取拖拽起始位置，和拖拽插入位置，在[onDrag](#事件)回调中完成交换数组位置逻辑。
 
-    ```ts
-    @Entry
-    @Component
-    struct GridExample {
+```ts
+@Entry
+@Component
+struct GridExample {
   @State numbers: String[] = []
   scroller: Scroller = new Scroller()
   @State text: string = 'drag'
@@ -282,6 +282,6 @@ struct GridExample {
       })
     }.width('100%').margin({ top: 5 })
   }
-    }
-    ```
+}
+```