Ports docs examples are misleading

[cjellick]

In the ports docs section (https://docs.acorn.io/running/networking#publish-individual-ports), we say things like

-p 80       Publish port 80/tcp in the Acorn to port 80/tcp as a service load balancer.

But this is inaccurate. It will be tcp and a loadbalancer if the port in the acornfile file was tcp. If the port in the acornfile was http, this will publish as an ingress

[cjellick]

LGTM