fix wrong usage in (generated) kubectl command

[Zhuzhenghao]

Signed-off-by: zhuzhenghao zhenghao.zhu@daocloud.io

/kind feature

FIX ISSUE: https://github.com/kubernetes/website/issues/38626

See this function in cobra https://github.com/spf13/cobra/blob/main/command.go#L1386

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[tengqm]

/lgtm /approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tengqm, Zhuzhenghao

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