Update c.pod_design.md

[jfullam]

The option to show specific labels on a get command is no -L and not -l

[mihail-i4v]

Differences in output

➜ k get pods -l app
NAME     READY   STATUS    RESTARTS   AGE
nginx1   1/1     Running   0          4m48s
nginx2   1/1     Running   0          4m44s
nginx3   1/1     Running   0          4m40s

  -l, --selector='': Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2)

➜ k get pods -L app
NAME     READY   STATUS    RESTARTS   AGE     APP
nginx1   1/1     Running   0          3m33s   v1
nginx2   1/1     Running   0          3m29s   v2
nginx3   1/1     Running   0          3m25s   v1

  -L, --label-columns=[]: Accepts a comma separated list of labels that are going to be presented as columns. Names are
case-sensitive. You can also use multiple flag options like -L label1 -L label2...