Update documentation of commit command to show image reference is optional

[Jumanjii]

Following
Commit ba1d130 ("make image reference for commit optional")

Updates usage text used by cobra and markdown document used to generate MAN page.

Closes #5145

Signed-off-by: Allan Jacquet-Cretides allan.jacquet@gmail.com

[openshift-ci-robot]

Hi @Jumanjii. Thanks for your PR.

I'm waiting for a containers member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[rhatdan]

LGTM
@TomSweeneyRedHat @mheon @giuseppe @vrothberg @QiWang19 @baude PTAL

[rhatdan]

Thanks @Jumanjii

[TomSweeneyRedHat]

/lgtm

[vrothberg]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Jumanjii, vrothberg

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