[SCSI] MAINTAINERS: update sg entry

update sg MAINTAINERS file entry: web site and documentation
entry
Signed-off-by: NDouglas Gilbert <dgilbert@interlog.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

MAINTAINERS

@@ -7455,8 +7455,9 @@ F:	include/scsi/srp.h
 SCSI SG DRIVER
 M:	Doug Gilbert <dgilbert@interlog.com>
 L:	linux-scsi@vger.kernel.org
-W:	http://www.torque.net/sg
+W:	http://sg.danny.cz/sg
 S:	Maintained
+F:	Documentation/scsi/scsi-generic.txt
 F:	drivers/scsi/sg.c
 F:	include/scsi/sg.h