Update README.md

Author: johanneswilm

README.md

@@ -12,7 +12,7 @@ This project is licensed under the LGPL v. 3. For details see LICENSE.txt.
 
 ## Demo and tests
 
-Check http://johanneswilm.github.io/diffDOM for demo and tests.
+Check http://fiduswriter.github.io/diffDOM for demo and tests.
 
 ## Usage