[pt-br] Update docs/setup/production-environment/tools/kubeadm/install-kubeadm.md (#46001)

* Install Kubeadm page in Brazilian Portuguese is outdated

* Add missing check-required-ports anchor

* consolidate wording

Address feedback

Address feedback

* Update content/pt-br/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md

Co-authored-by: Mauren <[email protected]>

* Update content/pt-br/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md

Co-authored-by: Mauren <[email protected]>

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Co-authored-by: Mauren <[email protected]>

Author: ricardoamaro