!16026 翻译完成 15797：更新columnsplit示例

Merge pull request !16026 from ester.zhou/TR-15797

en/application-dev/reference/arkui-ts/ts-container-columnsplit.md

@@ -47,6 +47,7 @@ struct ColumnSplitExample {
         Text('4').width('100%').height(50).backgroundColor(0xD2B48C).textAlign(TextAlign.Center)
         Text('5').width('100%').height(50).backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
       }
+      .borderWidth(1)
       .resizeable(true) // The divider can be dragged.
       .width('90%').height('60%')
     }.width('100%')
@@ -54,4 +55,4 @@ struct ColumnSplitExample {
 }
 ```
 
-![en-us_image_0000001212378422](figures/en-us_image_0000001212378422.gif)
+![en-us_image_0000001219982708](figures/en-us_image_0000001219982708.gif)