fixed typo

[gpwclark]

Been relying on this pretty extensively and it is SUPER cool. It's not finished but I've been modifying the structure so there is a third kind of node. I'm just calling it a broker for now but essentially I wanted to test nodes that could produce and consume. The only way I could get it to work properly was to have the broker nodes depends_on on the nfd nodes then register faces/routes to them. I run nfd-autoreg on the nfd nodes with some base prefix I had to make sure matched what was in the consumer and produce env... as opposed to the original routing structure where the faces/route registration pattern follows the docker-compose dependency hierarchy and creates a unidirectional interest path from consumer to producer. Anyway, neither here nor there, just wanted to add some flavor to a very banal PR.