Fix github.com to github.io URLs in NOTICE.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: trans

NOTICE.md

@@ -2,9 +2,9 @@
 
 ## ANSI
 
-Copyright © 2009 [Rubyworks](http://rubyworks.github.com) ·
+Copyright © 2009 [Rubyworks](http://rubyworks.github.io) ·
 License [BSD-2-Clause](http://spdx.org/licenses/BSD-2-Clause) ·
-Website http://rubyworks.github.com/ansi
+Website http://rubyworks.github.io/ansi
 
     Copyright 2009 Rubyworks.