Update restart description
Update restart description

add a note around restart policies only working in detached mode

Signed-off-by: Aidan Feldman <aidan.feldman@gmail.com>

Update restart description with Mary's comments.

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

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