[commit: ghc] ghc-8.2: Eliminate a user manual warning (20dc253)

[git at git.haskell.org]

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

On branch  : ghc-8.2
Link       : http://ghc.haskell.org/trac/ghc/changeset/20dc25345db1d318fc02ceb1ef15754be0cc13be/ghc

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

commit 20dc25345db1d318fc02ceb1ef15754be0cc13be
Author: Simon Peyton Jones <simonpj at microsoft.com>
Date:   Mon Mar 27 10:09:37 2017 +0100

    Eliminate a user manual warning
    
    I was getting
      docs/users_guide/glasgow_exts.rst:12783:
         WARNING: Title underline too short.
    
      ``COLUMN`` pragma
      ---------------
    
    So I lengthened the row of hyphens.
    
    (cherry picked from commit af33073c77e409d594e61609b3fba7070766cb75)


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20dc25345db1d318fc02ceb1ef15754be0cc13be
 docs/users_guide/glasgow_exts.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/users_guide/glasgow_exts.rst b/docs/users_guide/glasgow_exts.rst
index 17e096f..89b970c 100644
--- a/docs/users_guide/glasgow_exts.rst
+++ b/docs/users_guide/glasgow_exts.rst
@@ -12780,7 +12780,7 @@ positions are not automatically advanced.
 .. _column-pragma:
 
 ``COLUMN`` pragma
----------------
+-----------------
 
 .. index::
    single: COLUMN; pragma