review code about cmd/* and fix some easy typos :D
review code about cmd/* and fix some easy typos :D

Signed-off-by: Aaron.L.Xu <6a9a70c5c44a28a7d9125a5c9e0b6d972d010d8a@harmonycloud.cn>

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