Fix author URL.

Author: cjproud

AUTHORS.rst

@@ -81,4 +81,4 @@ Contributors (chronological)
 - Sebastien Lovergne `@TheBigRoomXXL <https://github.com/TheBigRoomXXL>`_
 - Luna Lovegood `@duchuyvp <https://github.com/duchuyvp>`_
 - Tobias Kolditz `@kolditz-senec <https://github.com/kolditz-senec>`_
-- Christian Proud `@cjproud https://github.com/cjproud`
+- Christian Proud `@cjproud <https://github.com/cjproud>`