Changes to haddock

Changes to haddock:
commit 6b35adfb811d9e41e5bfa1c11963e441740c2836
Author: Niklas Haas <git@nand.wakku.to>
Date:   Sat Feb 15 08:41:40 2014 +0100

    Add test case for inter-module type/data family instances

    These should show up in every place where the class is visible, and
    indeed they do right now.

    Signed-off-by: Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk>