update support url

Author: technoweenie

README.md

@@ -21,7 +21,7 @@ To parse reply body:
 
 If you have a question about the behavior and formatting of email replies on GitHub, check out [support][support].  If you have a specific issue regarding this library, then hit up the [Issues][issues].
 
-[support]: http://support.github.com/
+[support]: https://github.com/support
 [issues]: https://github.com/github/email_reply_parser/issues
 
 ## Installation