Fix broken link.

Author: emina

README.md

@@ -4,4 +4,4 @@ MiniSat-p v1.14
 This is a patched and slightly extended version of the MiniSat v1.14 solver 
 with proof logging.  The original source code, by Niklas Een and 
 Niklas Sörensson, is [available](http://minisat.se/downloads/MiniSat-p_v1.14.2006-Sep-07.src.zip) 
-at the [MiniSat page](www.cs.chalmers.se/Cs/Research/FormalMethods/MiniSat/).
+at the [MiniSat page](http://minisat.se/).