trivial: update the Kernel Janitors' web-page URL

The former address cannot be resolved.
Signed-off-by: NMarkus Heidelberg <markus.heidelberg@web.de>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

MAINTAINERS

@@ -2955,7 +2955,7 @@ F:	scripts/Makefile.*
 KERNEL JANITORS
 L:	kernel-janitors@vger.kernel.org
 W:	http://www.kerneljanitors.org/
-S:	Odd fixes
+S:	Maintained
 
 KERNEL NFSD, SUNRPC, AND LOCKD SERVERS
 M:	"J. Bruce Fields" <bfields@fieldses.org>