Update docs against 21814

Signed-off-by: wusongqing<wusongqing@huawei.com>

en/application-dev/IDL/idl-guidelines.md

@@ -347,11 +347,10 @@ export default {
 
 #### Calling Methods from the Client for IPC
 
-When the client calls **connectAbility()** to connect to a Service ability, the **onConnect** callback in **onAbilityConnectDone** of the client receives the **IRemoteObject** instance returned by the **onConnect()** method of the Service ability. The client and Service ability are in different applications. Therefore, the directory of the client application must contain a copy of the .idl file (the SDK automatically generates the proxy class). The **onConnect** callback then uses the **IRemoteObject** instance to create the **testProxy** instance of the **IdlTestServiceProxy** class and calls the related IPC method. The sample code is as follows:
+When the client calls **connectServiceExtensionAbility()** to connect to a Service ability, the **onConnect** callback in **onAbilityConnectDone** of the client receives the **IRemoteObject** instance returned by the **onConnect()** method of the Service ability. The client and Service ability are in different applications. Therefore, the directory of the client application must contain a copy of the .idl file (the SDK automatically generates the proxy class). The **onConnect** callback then uses the **IRemoteObject** instance to create the **testProxy** instance of the **IdlTestServiceProxy** class and calls the related IPC method. The sample code is as follows:
 
 ```ts
 import IdlTestServiceProxy from './idl_test_service_proxy'
-import featureAbility from '@ohos.ability.featureAbility';
 
 function callbackTestIntTransaction(result: number, ret: number): void {
   if (result == 0 && ret == 124) {
@@ -396,13 +395,13 @@ var onAbilityConnectDone = {
   }
 };
 
-function connectAbility: void {
+function connectAbility(): void {
     let want = {
         bundleName: 'com.example.myapplicationidl',
         abilityName: 'com.example.myapplicationidl.ServiceAbility'
     };
     let connectionId = -1;
-    connectionId = featureAbility.connectAbility(want, onAbilityConnectDone);
+    connectionId = this.context.connectServiceExtensionAbility(want, onAbilityConnectDone);
 }