[commit: ghc] master: Bump haddock submodule (f4e6591)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/f4e659121960eb81d5478f0b20d4cf6f4c0ed0d9/ghc

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

commit f4e659121960eb81d5478f0b20d4cf6f4c0ed0d9
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Sat Apr 16 17:53:08 2016 +0200

    Bump haddock submodule


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f4e659121960eb81d5478f0b20d4cf6f4c0ed0d9
 utils/haddock | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/haddock b/utils/haddock
index c6d6a18..a77728c 160000
--- a/utils/haddock
+++ b/utils/haddock
@@ -1 +1 @@
-Subproject commit c6d6a18d85e5e2d9bb5904e6919e8a8d7e31c4c5
+Subproject commit a77728cc274751e8b8077b3ccc8aacc7d00bf36d