Clean up formatting on with-any-k8s steps

[anderm3]

Fixes #(issue-number)

This cleans up some example text for the Knative install on any k8s documentation.

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Hi @anderm3. Thanks for your PR.

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[RichieEscarez]

/lgtm

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: anderm3, RichieEscarez

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