Correct typo from 'protocall' to 'protocol'

[jongwooo]

Description

Correct typo from 'protocall' to 'protocol'.

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[k8s-ci-robot]

Welcome @jongwooo!

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[k8s-ci-robot]

Hi @jongwooo. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[tssurya]

/ok-to-test

[danwinship]

/lgtm /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: danwinship, jongwooo

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/network-policy-api/blob/main/OWNERS)~~ [danwinship] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[astoycos]

/retest