!9294 OnContextMenuShow modify the test case code

Merge pull request !9294 from 虞仕浩/0909

zh-cn/application-dev/reference/arkui-ts/ts-basic-components-web.md

@@ -1598,10 +1598,10 @@ onContextMenuShow(callback: (event?: { param: WebContextMenuParam, result: WebCo
     build() {
       Column() {
         Web({ src: 'www.example.com', controller: this.controller })
-        .onContextMenuShow((event) => {
+          .onContextMenuShow((event) => {
             console.info("x coord = " + event.param.x());
             console.info("link url = " + event.param.getLinkUrl());
-            return false;
+            return true;
         })
       }
     }