Fix sample code of ability

Signed-off-by: Nyuyaozhi <yuyaozhi@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-application-Want.md

@@ -73,6 +73,9 @@ import Want from '@ohos.application.Want';
 - 传递RemoteObject数据
 
   ```  js
+    import rpc from '@ohos.rpc';
+    import Ability from '@ohos.application.Ability'
+
     class Stub extends rpc.RemoteObject {
         constructor(des) {
             if (typeof des == 'string') {
@@ -103,15 +106,17 @@ import Want from '@ohos.application.Want';
         "deviceId": "", // deviceId为空表示本设备
         "bundleName": "com.extreme.test",
         "abilityName": "MainAbility",
-        "moduleName": "entry" // moduleName非必选
+        "moduleName": "entry", // moduleName非必选
         "parameters": {
             "keyRemoteObject":{"type":"RemoteObject", "value":remoteObject}
         }
     };
+
     this.context.startAbility(want, (error) => {
         // 显式拉起Ability，通过bundleName、abilityName和moduleName可以唯一确定一个Ability
         console.log("error.code = " + error.code)
     })
+
   ```
   <!--no_check-->
 

zh-cn/application-dev/reference/apis/js-apis-errorManager.md

@@ -33,14 +33,8 @@ var observer = {
         console.log('onUnhandledException, errorMsg: ', errorMsg)
     }
 }
-errorManager.registerErrorObserver(observer)
-    .then((data) => {
-        console.log('----------- registerErrorObserver success ----------', data);
-    })
-    .catch((err) => {
-        console.log('----------- registerErrorObserver fail ----------', err);
-    })
-
+const registerErrorObserverNumber=errorManager.registerErrorObserver(observer)
+console.info(registerErrorObserverNumber)
 ```
 
 ## ErrorManager.unregisterErrorObserver