Update OneSignalSDK/onesignal/core/src/main/java/com/onesignal/notifications/IDisplayableNotification.kt

Co-authored-by: William Shepherd <williamrshepherd@gmail.com>

Author: brismithers

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/notifications/IDisplayableNotification.kt

@@ -6,7 +6,7 @@ package com.onesignal.notifications
 interface IDisplayableNotification : INotification {
     /**
      * Display the notification on the device. Typically this is only possible within a short
-     * time-frame (~30 seconds) after the notification has been received on the device.  See
+     * time-frame (~30 seconds) after the notification is received on the device.  See
      * [INotificationReceivedEvent] and [INotificationWillDisplayEvent] for more information
      * on how this might be used.
      */