Fix twiter bootstrap URL.

Author: rouilj

share/roundup/templates/responsive/TEMPLATE-INFO.txt

@@ -1,7 +1,7 @@
 Name: responsive
 Description: This issue tracker uses the same schema as devel.
             The difference between devel and responsive templates
-            is the use of Twitter bootstrap (http://twitter.github.com/bootstrap/)
+            is the use of Twitter bootstrap (https://github.com/twbs/bootstrap)
             in templates and HTML5 markup.
 	    Make sure the "static_files" setting in your config.ini of your
             instance is set to the directory where the static files live