What broke? What's expected?

The example of the v2 webhook (defaults/validation) is using v1 as implementation, instead of v2

https://github.com/kubernetes-sigs/kubebuilder/blob/master/docs/book/src/multiversion-tutorial/testdata/project/internal/webhook/v2/cronjob_webhook.go

Seen in: https://book.kubebuilder.io/multiversion-tutorial/webhooks

Reproducing this issue

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KubeBuilder (CLI) Version

n/a

PROJECT version

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Plugin versions

Other versions

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Extra Labels

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