Add reference to tc-codel(8) to the SEE ALSO section

Reported-by: Andy Furniss <andyqos@ukfsn.org>
Signed-off-by: Jan Ceuleers <jan.ceuleers@computer.org>

man/man8/tc.8

@@ -368,6 +368,7 @@ was written by Alexey N. Kuznetsov and added in Linux 2.2.
 .SH SEE ALSO
 .BR tc-cbq (8),
 .BR tc-choke (8),
+.BR tc-codel (8),
 .BR tc-drr (8),
 .BR tc-htb (8),
 .BR tc-hfsc (8),