[NET]: Kill Documentation/networking/TODO

Sorely out of date.  Add the linux-net wiki web site to
the NETWORKING maintainers entry, on which we maintain
the current networking TODO list.

Noticed by Randy Dunlap.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/MAINTAINERS b/MAINTAINERS
index e5b051f..c946581 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1885,6 +1885,7 @@
 P:	Networking Team
 M:	netdev@vger.kernel.org
 L:	netdev@vger.kernel.org
+W:	http://linux-net.osdl.org/
 S:	Maintained
 
 NETWORKING [IPv4/IPv6]