Remove links to haskell.org/alex

Author: andreasabel

alex.cabal

@@ -9,7 +9,7 @@ author: Chris Dornan and Simon Marlow
 maintainer: https://github.com/haskell/alex
 bug-reports: https://github.com/haskell/alex/issues
 stability: stable
-homepage: http://www.haskell.org/alex/
+homepage: https://github.com/haskell/alex
 synopsis: Alex is a tool for generating lexical analysers in Haskell
 description:
   Alex is a tool for generating lexical analysers in Haskell.

doc/about.rst

@@ -3,8 +3,8 @@
 About Alex
 ==========
 
-Alex can always be obtained from its `home page <https://www.haskell.org/alex>`__.
-The latest source code lives in the `git repository <https://github.com/haskell/alex>`__ on ``GitHub``.
+Alex written in Haskell.
+The source code lives in the `git repository <https://github.com/haskell/alex>`__ on ``GitHub``.
 
 Releases
 --------