[nl] Update list of versions to match English

[ricardoamaro]

Align https://kubernetes.io/es/docs/home/supported-doc-versions/ with https://kubernetes.io/docs/home/supported-doc-versions/

/language nl

[k8s-ci-robot]

@ricardoamaro: The label(s) language/nl cannot be applied, because the repository doesn't have them.

In response to this:

Align https://kubernetes.io/es/docs/home/supported-doc-versions/ with https://kubernetes.io/docs/home/supported-doc-versions/

/language nl

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[salaxander]

/area localization

[dipesh-rawat]

This is interesting! I wasn't aware that we have Dutch (ISO 639-1 code nl) localization support. Perhaps this is similar to what was done for the Norwegian language, possibly added for only testing purposes. I'll defer to the Localization or Docs leads to provide more insight on this.

[seokho-son]

Hi @dipesh-rawat,

• We currently do not have Dutch localization support (ISO 639-1 code: nl).
• Our only Dutch localization file is data/i18n/nl/nl.toml, which was added 5 years ago through this PR: Created nl.toml #14131. This was before we had a formalized localization guide.
• We have two options: we can either remove data/i18n/nl/nl.toml since it is not maintained by a localization team, or we can continue to maintain data/i18n/nl/nl.toml with contributions from individual contributors.

While this PR is acceptable since the update does not affect our live site, I believe it would be better to remove data/i18n/nl/nl.toml since it has not been updated in the last 4 years (apart from being relocated and minor typo fix).
(note: https://github.com/kubernetes/website/blob/main/i18n/nl.toml should be cared as well if we remove the content)