fixed c645486f from https://gitee.com/zhongjianfei/docs/pulls/17290

modify ArkTSCard Sample link.
Signed-off-by: Nzhongjianfei <zhongjianfei@huawei.com>
Change-Id: Ic6bf8383fb2a14108d08db65bb3fc2f3a7abe5e2

zh-cn/application-dev/application-models/service-widget-development-samples.md

@@ -10,4 +10,5 @@
 
 - [基于Stage模型的ArkTS卡片（Canvas绘制实现的五子棋游戏卡片）（API9）](https://gitee.com/openharmony/applications_app_samples/tree/master/ability/ArkTSCard/CanvasGame)
 
-- [基于Stage模型的ArkTS卡片（逻辑代码执行实现的计算器卡片）（API9）](https://gitee.com/openharmony/applications_app_samples/tree/master/ability/ArkTSFormCalc)
+- [基于Stage模型的ArkTS卡片（逻辑代码执行实现的计算器卡片）（API9）](https://gitee.com/openharmony/applications_app_samples/tree/master/ability/ArkTSCard/Calculator)
+