Align with other cli descriptions

[yu8833]

Signed-off-by: yupeng [email protected]

[danmcp]

I would remove the period from the one that has it instead.

[fabianofranz]

@YuPengZTE thanks for the PR! Note that since this PR changes command docs, you have to run hack/update-generated-docs.sh and add the generated assets.

[yu8833]

Thanks @fabianofranz, I run hack/update-generated-docs.sh, the info is that have no file to commit,like this:
root@yupeng-VirtualBox:/home/yupeng/github.com/openshift/origin# ./hack/update-generated-docs.sh
++ Building go targets for linux/amd64: tools/gendocs tools/genman
++ Placing binaries
/home/yupeng/github.com/openshift/origin/hack/build-go.sh took 1673 seconds
Assets generated in /home/yupeng/github.com/openshift/origin//docs/generated
Assets generated in /home/yupeng/github.com/openshift/origin//docs/man/man1
Assets generated in /home/yupeng/github.com/openshift/origin//docs/man/man1
Assets generated in /home/yupeng/github.com/openshift/origin//docs/man/man1

[fabianofranz]

[test]

[openshift-bot]

Evaluated for origin test up to b0e3ed1

[openshift-bot]

continuous-integration/openshift-jenkins/test SUCCESS (https://ci.openshift.redhat.com/jenkins/job/test_pr_origin/10845/) (Base Commit: 8b2d509)

[fabianofranz]

[merge]

[openshift-bot]

continuous-integration/openshift-jenkins/merge SUCCESS (https://ci.openshift.redhat.com/jenkins/job/test_pr_origin/10845/) (Image: devenv-rhel7_5279)

[openshift-bot]

Evaluated for origin merge up to b0e3ed1