Comment 1 for bug 1567732

Output now:

Usage: juju expose [options] <service name>

Summary:
Makes a service publicly available over the network.

Options:
-m, --model (= "")
    Model to operate in

Details:
Adjusts the firewall rules and any relevant security mechanisms of the
cloud to allow public access to the service.

Examples:
    juju expose wordpress

See also:
    unexpose