[enterprise-4.15] OSDOCS-34559: updates procedure with xref to alternative option

[openshift-cherrypick-robot]

This is an automated cherry-pick of #78136

/assign JoeAldinger

[openshift-ci-robot]

@openshift-cherrypick-robot: Ignoring requests to cherry-pick non-bug issues: OSDOCS-34559

In response to [this](https://github.com/openshift/openshift-docs/pull/78449): >This is an automated cherry-pick of #78136 > >/assign JoeAldinger Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fopenshift-docs). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[ocpdocs-previewbot]

🤖 Wed Jul 03 16:17:38 - Prow CI generated the docs preview:

https://78449--ocpdocs-pr.netlify.app/ https://78449--ocpdocs-pr.netlify.app/openshift-enterprise/latest/networking/ovn_kubernetes_network_provider/migrate-from-openshift-sdn.html

[openshift-ci[bot]]

@openshift-cherrypick-robot: all tests passed!

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository. I understand the commands that are listed [here](https://go.k8s.io/bot-commands).