Update doc

Author: JoshLipan

documents/api.md

@@ -11,8 +11,8 @@
   * [setTags](#settags)
   * [cleanTags](#cleantags)
   * [sendLocalNotification](#sendlocalnotification)
-  * [clearLocalNotifications](#clearLocalNotifications)
-  * [removeLocalNotification](#removeLocalNotification)
+  * [clearLocalNotifications](#clearlocalnotifications)
+  * [removeLocalNotification](#removelocalnotification)
   * [clearAllNotifications](#clearallnotifications)
   * [clearNotificationById](#clearnotificationbyId)
   * [点击推送事件](#点击推送事件)

documents/api_en.md

@@ -13,8 +13,8 @@
   * [Receive Notification event](#receive-notification-event)
   * [Receive Custom Message Event](#receive-custom-message-event)
   * [sendLocalNotification](#sendlocalnotification)
-  * [removeLocalNotification](#removeLocalNotification)
-  * [clearLocalNotifications](#clearLocalNotifications)
+  * [removeLocalNotification](#removelocalnotification)
+  * [clearLocalNotifications](#clearlocalnotifications)
   * [clearAllNotifications](#clearallnotifications)
   * [clearNotificationById](#clearnotificationbyId)
 * [iOS Only API](#ios-only-api)