fix(k8s): fix validation kubernetes-resource snippet

[pmalek]

Description

x-ref: https://docs.google.com/document/d/1T5zJceSOrdS33iWb8uiiQq6X9N8YD-L8_t493-rw0Fw/edit?disco=AAABwtx3KzQ

Preview Links

https://deploy-preview-3606--kongdeveloper.netlify.app/operator/dataplanes/get-started/hybrid/deploy-dataplane/#prerequisites

Checklist

• Tested how-to docs. If not, note why here.
• All pages contain metadata.
• Any new docs link to existing docs.
• All autogenerated instructions render correctly (API, decK, Konnect, Kong Manager).
• Style guide (capitalized gateway entities, placeholder URLs) implemented correctly.
• Every page has a description entry in frontmatter.
• Add new pages to the product documentation index (if applicable).

[netlify]

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