[pl] Ready training section for vanilla Docsy

[Arhell]

en PR https://github.com/kubernetes/website/pull/45870/files

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[mfilocha]

Thanks @Arhell ! /lgtm /approve

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LGTM label has been added.

Git tree hash: 6f2292b4dac06282b393d142d7be94065302d506

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mfilocha

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