修改示例代码

Signed-off-by: NHollokin <taoyuxin2@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-inputmethod-extension-context.md

@@ -44,8 +44,8 @@ destroy(callback: AsyncCallback\<void>): void
 **示例：**
 
 ```js
-this.context.destroy((err) => {
-  console.log('destroy result:' + JSON.stringify(err));
+this.context.destroy(() => {
+  console.log('Succeeded in destroying context.');
 });
 ```
 
@@ -67,8 +67,6 @@ destroy(): Promise\<void>;
 
 ```js
 this.context.destroy().then(() => {
-  console.log('Succeed in destoring context.');
-}).catch((error) => {
-  console.log('Failed to destory context: ' + JSON.stringify(error));
+  console.log('Succeed in destroying context.');
 });
 ```