【OpenHarmony开源贡献者计划2022】update ts-media-components-video.md.

Signed-off-by: NHaoc_小源同学 <1248690849@qq.com>

zh-cn/application-dev/reference/arkui-ts/ts-media-components-video.md

@@ -181,7 +181,7 @@ struct VideoCreateComponent {
                   console.error('onFinish');
                 })
         .onError(() => {
-                  console.error('onFinish');
+                  console.error('onError');
                 })
         .onPrepared((e) => {
                     console.error('onPrepared is ' + e.duration);