Fix Typo

Author: Lukas Kämmerling

CHANGELOG.md

@@ -2,11 +2,11 @@
 
 All Notable changes to `onesignal` will be documented in this file
 
-## 1.1.0 - 2018-01-xx
+## 1.1.0 - 2018-01-08
 - Min. PHP Version is now PHP 7.0 and tests were executed on php 7.2 https://github.com/laravel-notification-channels/onesignal/pull/44
 - [Feature] Added possibility to send a Notification based on the User E-Mail https://github.com/laravel-notification-channels/onesignal/pull/40
 - [Feature] Added method to set any parameter on the message https://github.com/laravel-notification-channels/onesignal/pull/23
-- [Feature] Added method to set all image attachsments at one https://github.com/laravel-notification-channels/onesignal/pull/42 
+- [Feature] Added method to set all image attachments at one https://github.com/laravel-notification-channels/onesignal/pull/42 
 
 ## 1.0.2 - 2018-01-03