Update readme

Author: codyphobe

README.md

@@ -1,4 +1,4 @@
-# Discord notification channel for Laravel 5.6+
+# Discord notification channel for Laravel 6.0+
 
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/laravel-notification-channels/discord.svg?style=flat-square)](https://packagist.org/packages/laravel-notification-channels/discord)
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE.md)
@@ -12,7 +12,7 @@ This package makes it easy to send notifications using the [Discord bot API](htt
 
 ## Contents
 
-- [Discord notification channel for Laravel 5.6+](#discord-notification-channel-for-laravel-56)
+- [Discord notification channel for Laravel 6.0+](#discord-notification-channel-for-laravel-56)
     - [Contents](#contents)
     - [Installation](#installation)
         - [Setting up your Discord bot](#setting-up-your-discord-bot)