fix multiple typos in go files

[ml-]

several typo fixes.

What type of PR is this?

/kind cleanup

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @ml-. Thanks for your PR.

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[neolit123]

/ok-to-test
/triage accepted

[ml-]

/retest

[ml-]

/assign @MrHohn @smarterclayton

[MrHohn]

/lgtm

[aojea]

/lgtm
/assign @wojtek-t

[wojtek-t]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ml-, MrHohn, wojtek-t

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Needs approval from an approver in each of these files:

• pkg/registry/OWNERS [wojtek-t]
• pkg/util/bandwidth/OWNERS [MrHohn,wojtek-t]

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