IssueNo:#I5O9P6

Description:Fix a bug in the loadContent sample code.
Sig:SIG_ApplicationFramework
Feature or BugFix: BugFix`
Binary Source: No
Signed-off-by: Nzhangyafei.echo <zhangyafei12@huawei.com>
Change-Id: I042f0c535d536eed657458174d4513a53347438c

zh-cn/application-dev/ability/stage-ability.md

@@ -87,7 +87,7 @@ Ability功能如下（Ability类，具体的API详见[接口文档](../reference
     onWindowStageCreate(windowStage) {
         console.log("MainAbility onWindowStageCreate")
 
-        windowStage.loadContent("pages/index").then((data) => {
+        windowStage.loadContent("pages/index").then(() => {
             console.log("MainAbility load content succeed")
         }).catch((error) => {
             console.error("MainAbility load content failed with error: " + JSON.stringify(error))