chore: fix some function names in comment

[cuiyourong]

fix some function names in comment

[k8s-ci-robot]

Hi @cuiyourong. Thanks for your PR.

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[justinsb]

Thanks @cuiyourong

/approve
/lgtm
/ok-to-test

[k8s-ci-robot]

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This pull-request has been approved by: justinsb

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