[commit: ghc] master: Fix minor typo in README.md (e9a239c)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/e9a239ce3569239768204c93a2eb90bfb0f3383d/ghc

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

commit e9a239ce3569239768204c93a2eb90bfb0f3383d
Author: Takenobu Tani <takenobu.hs at gmail.com>
Date:   Mon Jan 30 11:59:58 2017 -0500

    Fix minor typo in README.md
    
    
    Reviewers: austin, bgamari
    
    Reviewed By: bgamari
    
    Subscribers: thomie
    
    Differential Revision: https://phabricator.haskell.org/D3040


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

e9a239ce3569239768204c93a2eb90bfb0f3383d
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 2cecbdc..a1b2354 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,7 @@ this step has already been performed.
 
 These steps give you the default build, which includes everything
 optimised and built in various ways (eg. profiling libs are built).
-It can take a long time.  To customise the build, see the file `HACKING`.
+It can take a long time.  To customise the build, see the file `HACKING.md`.
 
 Filing bugs and feature requests
 ================================