Update broken web addresses in arch directory.

The patch below updates broken web addresses in the arch directory.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index 836abbb..3867fd2 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -315,7 +315,7 @@
 	  Management" code will be disabled if you say Y here.
 
 	  See also the SMP-HOWTO available at
-	  <http://www.linuxdoc.org/docs.html#howto>.
+	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
 
 	  If you don't know what to do here, say N.