Fix typo in direct message spec
Fix typo in direct message spec

Now the test makes more sense, since it checks the third message for the
same sender is valid.

usabi/consul_san_borondon,consul/consul,consul/consul,usabi/consul_san_borondon,consul/consul,consul/consul,consul/consul,usabi/consul_san_borondon,usabi/consul_san_borondon