dm crypt: update url in CONFIG_DM_CRYPT help text

Update the obsolete url in the CONFIG_DM_CRYPT help text.

Signed-off-by: Loic Pefferkorn <loic@loicp.eu>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 5bdedf6..09c89a4b 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -230,9 +230,8 @@
 	  transparently encrypts the data on it. You'll need to activate
 	  the ciphers you're going to use in the cryptoapi configuration.
 
-	  Information on how to use dm-crypt can be found on
-
-	  <http://www.saout.de/misc/dm-crypt/>
+	  For further information on dm-crypt and userspace tools see:
+	  <http://code.google.com/p/cryptsetup/wiki/DMCrypt>
 
 	  To compile this code as a module, choose M here: the module will
 	  be called dm-crypt.