fix docs bugs for ArkTS card.

Signed-off-by: Nzhongjianfei <zhongjianfei@huawei.com>
Change-Id: Ie2ab0740225960edd69a9371b988518061865152

zh-cn/application-dev/application-models/arkts-ui-widget-page-animation.md

@@ -37,7 +37,6 @@ struct AttrAnimationExample {
         .rotate({ angle: this.rotateAngle })
         .animation({
           curve: Curve.EaseOut,
-          iterations: 1,
           playMode: PlayMode.AlternateReverse
         })
     }.width('100%').margin({ top: 20 })