Update copyright holders in LICENSE (#59)

* Update copyright holders in LICENSE

* Use space instead of hyphen

LICENSE

@@ -631,6 +631,7 @@ the "copyright" line and a pointer to where the full notice is found.
 
     Red Discord Bot - Dashboard: An easy-to-use interactive web dashboard to control your Redbot.
     Copyright (C) 2020  Neuro Assassin
+    Copyright (C) 2021  Neuro Assassin, Cog Creators
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU Affero General Public License as published
@@ -658,4 +659,4 @@ specific requirements.
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU AGPL, see
-<https://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.