[commit: ghc] master: Fix link to launchbury93natural (df61477)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/df614779c356ea6aef29367a8dd1ca819b03a1d1/ghc

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

commit df614779c356ea6aef29367a8dd1ca819b03a1d1
Author: Joachim Breitner <mail at joachim-breitner.de>
Date:   Fri Sep 6 11:10:25 2013 +0200

    Fix link to launchbury93natural


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

df614779c356ea6aef29367a8dd1ca819b03a1d1
 docs/users_guide/external_core.xml |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/users_guide/external_core.xml b/docs/users_guide/external_core.xml
index bc9d350..2227381 100644
--- a/docs/users_guide/external_core.xml
+++ b/docs/users_guide/external_core.xml
@@ -1786,7 +1786,7 @@ case (error &quot;&quot;) of
         <state>South Carolina</state>
       </address>
       <pubdate>1993</pubdate>  
-      <bibliomisc><ulink url="citeseer.ist.psu.edu/launchbury93natural.html">citeseer.ist.psu.edu/launchbury93natural.html</ulink></bibliomisc>
+      <bibliomisc><ulink url="http://citeseer.ist.psu.edu/launchbury93natural.html">http://citeseer.ist.psu.edu/launchbury93natural.html</ulink></bibliomisc>
       <!-- booktitle = "Conference Record of the Twentieth Annual {ACM} {SIGPLAN}-{SIGACT} Symposium on Principles of Programming Languages", -->
     </biblioentry>