examples/README: update tutorials URL

citutor.org is now hpc-training.org.

Signed-off-by: Jeff Squyres <[email protected]>

Author: jsquyres

examples/README.md

@@ -4,7 +4,7 @@ Open MPI installation is working properly.
 
 If you are looking for a comprehensive MPI tutorial, these samples are
 not enough.  [Excellent MPI tutorials are available
-here](http://www.citutor.org/login.php).
+here](http://www.hpc-training.org/).
 
 Get a free account and login; you can then browse to the list of
 available courses.  Look for the ones with "MPI" in the title.