typo error on vale-tutorial.pdf page 16

[nanjj]

vale-tutorial.pdf page 16:

% pkt-gen -i vale0:vi0 –f tx (another terminal)
% pkt-gen -i vale0:vi1 –f rx % vale-ctl –n vi2
% vale-ctl –a vale0:vi2 (another terminal)
% pkt-gen –i vale0:vi2 –f tx (you don't see packets) 
# it should be -f rx, since the module logic is to send packets 
to port +1, 0 tx, 1 rx, so 2 can not receive packets.

[vmaffione]

Thanks, I'll notify the author.

[micchie]

Sorry, created a merge request