[commit: ghc] master: Bump haddock submodule (18676a4)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/18676a4a0dfe79e2704e48be5c8716a656825efe/ghc

>---------------------------------------------------------------

commit 18676a4a0dfe79e2704e48be5c8716a656825efe
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Sun May 1 13:22:14 2016 +0200

    Bump haddock submodule
    
    Fixes documentation installation.


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18676a4a0dfe79e2704e48be5c8716a656825efe
 utils/haddock | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/haddock b/utils/haddock
index 56dbfe1..609018d 160000
--- a/utils/haddock
+++ b/utils/haddock
@@ -1 +1 @@
-Subproject commit 56dbfe17d272670e5f2d082401c025755796950d
+Subproject commit 609018dd09c4ffe27f9248b2d8b50f6196cd42b9