fixed cb6c1d3 from https://gitee.com/fangJinliang1/docs/pulls/3838

error modify
Signed-off-by: Nfangjinliang <fangjinliang1@huawei.com>

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

@@ -2186,7 +2186,7 @@ function requestEnabledNotificationCallback() {
     console.log('------------- requestEnabledNotification --------------');
 };
 
-Notification.requestEnabledNotification(requestEnabledNotificationCallback);
+Notification.requestEnableNotification(requestEnabledNotificationCallback);
 ```