Add missing client doc
Add missing client doc

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)

Zebrilee/cli,e11137/cli,allencloud/cli,thaJeztah/cli,dnephin/cli,Zebrilee/cli,thaJeztah/cli,cpuguy83/cli,redpanda/cli,dnephin/cli,ashfall/cli,docker/cli,cpuguy83/cli,allencloud/cli,e11137/cli,ashfall/cli,docker/cli,redpanda/cli,riyazdf/cli,riyazdf/cli