link is broken in upgrade doc, section `migrate-from-docker-to-containerd`

[zrcoder]

What happened?

upgrades.md#migrate-from-docker-to-containerd is 404, see:

https://github.com/kubernetes-sigs/kubespray/edit/master/docs/operations/upgrades.md#migrate-from-docker-to-containerd

also the same issue at https://kubespray.io/#/docs/operations/upgrades?id=migrate-from-docker-to-containerd

What did you expect to happen?

correct link

How can we reproduce it (as minimally and precisely as possible)?

visit the upgrades doc, just click the link in the section migrate-from-docker-to-containerd

OS

NA

Version of Ansible

NA

Version of Python

NA

Version of Kubespray (commit)

NA

Network plugin used

calico

Full inventory with variables

NA

Command used to invoke ansible

NA

Output of ansible run

NA

Anything else we need to know

No response

[tico88612]

Please feel free to open the PR to fix it.

/triage accepted