[4.12] storage/persistent-storage-nfs: Link to RHEL 8 docs

[travier]

See: #66588

Version(s):
4.12 and below (until the first EOL one)

Issue:
#66588

Link to docs preview:

QE review:

• QE has approved this change.

Additional information:
N/A

[ocpdocs-previewbot]

🤖 Mon Jan 22 18:49:39 - Prow CI generated the docs preview: https://66590--ocpdocs-pr.netlify.app

[openshift-bot]

Issues go stale after 90d of inactivity.

Mark the issue as fresh by commenting /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
Exclude this issue from closing by commenting /lifecycle frozen.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[travier]

/remove-lifecycle stale

[jldohmann]

LGTM, thanks for the PR!

[jldohmann]

/retest

[openshift-ci]

@travier: all tests passed!

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[jldohmann]

/cherrypick enterprise-4.11

[openshift-cherrypick-robot]

@jldohmann: new pull request created: #70660

In response to this:

/cherrypick enterprise-4.11

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