Update copyright in LICENSE-APACHE

Looks like we forgot to fill this in when we added the license file. ;)

Author: jwalton

LICENSE-APACHE

@@ -186,7 +186,7 @@ APPENDIX: How to apply the Apache License to your work.
    same "printed page" as the copyright notice for easier
    identification within third-party archives.
 
-Copyright [yyyy] [name of copyright owner]
+Copyright 2010 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.