docs(user): fix grammer in upi install step

[morey-tech]

No description provided.

[openshift-ci]

Hi @morey-tech. Thanks for your PR.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[sadasu]

/retest-required

[barbacbd]

/ok-to-test

[barbacbd]

/lgtm

[barbacbd]

nit: I think this can be dropped. I pulled this out and did a diff and didn't find anything different

[openshift-ci]

@morey-tech: all tests passed!

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