Add Reference to guide, on how to set up Proxy Protocol for Scaleway.

[Vad1mo]

Add a sentence about an official set up guide for the proxy protocol for Scaleway. This is needed as otherwise strange errors might be observed,

What this PR does / why we need it:

If the configuration is not followed according to the tutorial, it is not feasible to establish a connection from within the k8s cluster to the services running on that k8s cluster.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• CVE Report (Scanner found CVE and adding report)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

How Has This Been Tested?

https://kubernetes.slack.com/archives/CANQGM8BA/p1717934655537209

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added unit and/or e2e tests to cover my changes.
• All new and existing tests passed.

[linux-foundation-easycla]

• ✅login: Vad1mo / (695acb5)

The committers listed above are authorized under a signed CLA.

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[longwuyuan]

/ok-to-test
/kind documentation
/area docs
/triage accepted

[longwuyuan]

@Vad1mo thank you for the contribution.
History is here https://kubernetes.slack.com/archives/CANQGM8BA/p1717934655537209

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: longwuyuan, Vad1mo

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Needs approval from an approver in each of these files:

• docs/OWNERS [longwuyuan]

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[Gacko]

/cherry-pick release-1.10

[k8s-infra-cherrypick-robot]

@Gacko: new pull request created: #11445

In response to this:

/cherry-pick release-1.10

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