Update Internal Load Balancer docs

[z1cheng]

What this PR does / why we need it:

close #10058

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?

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.

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @z1cheng. Thanks for your PR.

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[longwuyuan]

@z1cheng the README inside the charts directory is not expected to be edited directly.
You have to use the tool called helm-docs. Its described here https://github.com/kubernetes/ingress-nginx/blob/main/MANUAL_RELEASE.md#d-edit-the-valuesyaml-and-run-helm-docs

[z1cheng]

@z1cheng the README inside the charts directory is not expected to be edited directly. You have to use the tool called helm-docs. Its described here https://github.com/kubernetes/ingress-nginx/blob/main/MANUAL_RELEASE.md#d-edit-the-valuesyaml-and-run-helm-docs

Updated, thanks for reminding

[strongjz]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: strongjz, z1cheng

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• charts/ingress-nginx/OWNERS [strongjz]

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