!9161 fix problems in demo code

Merge pull request !9161 from jidong/dev_0906

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

@@ -1523,6 +1523,8 @@ getAuthenticatorCallback(sessionId: string): Promise<AuthenticatorCallback&gt
 **示例：**
 
   ```js
+  import featureAbility from '@ohos.ability.featureAbility';
+
   const appAccountManager = account_appAccount.createAppAccountManager();
   featureAbility.getWant().then((want) => {
       var sessionId = want.parameters[account_appAccount.Constants.KEY_SESSION_ID];

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

@@ -2326,7 +2326,7 @@ registerInputer(inputer: IInputer): boolean;
 **示例：**
   ```js
   let pinAuth = new account_osAccount.PINAuth();
-  let password = new Uint8Array([0, 0, 0, 0, 0];
+  let password = new Uint8Array([0, 0, 0, 0, 0]);
   let result = pinAuth.registerInputer({
       onGetData: (pinSubType, callback) => {
         callback.onSetData(pinSubType, password);
@@ -2509,7 +2509,7 @@ updateCredential(credentialInfo: CredentialInfo, callback: IIdmCallback): void;
     }
   });
   userIDM.openSession((err, challenge) => {
-    userAuth.auth(challenge, credentialInfo.credType, account_osAccount.AuthTrustLevel.ATL_1, {
+    userAuth.auth(challenge, credentialInfo.credType, account_osAccount.AuthTrustLevel.ATL1, {
       onResult: (result, extraInfo) => {
         if (result != account_osAccount.ResultCode.SUCCESS) {
           return;
@@ -2571,8 +2571,9 @@ cancel(challenge: Uint8Array): number;
 **示例：**
   ```js
   let userIDM = new account_osAccount.UserIdentityManager();
-  let challenge = 1;
-  let cancelresult = userIDM.cancel(challenge);
+  let challenge = new Uint8Array([0]);
+  let result = userIDM.cancel(challenge);
+  console.log("cancel result: " + result);
   ```
 
 ### delUser<sup>8+</sup>