📖 [ISSUE-4417] Fix minor hyperlink formatting in emptymain.go

[jameskim0987]

Fixes #4417

Changes made in this PR:

1. The following sentence in emptymain.go:

   see the Kubernetes documentation about Using [RBAC Authorization](https://kubernetes.io/docs/reference/access-authn-authz/rbac/)

   has been fixed to:

   see the Kubernetes documentation about [Using RBAC Authorization](https://kubernetes.io/docs/reference/access-authn-authz/rbac/)

[k8s-ci-robot]

Hi @jameskim0987. Thanks for your PR.

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[camilamacedo86]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: camilamacedo86, jameskim0987

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