Fixed minor typo in k8s management section

What does this MR do and why?

Fixed minor typo in k8s management section of our documentation.

Fixed "beased" to "based" :)

Screenshots or screen recordings

How to set up and validate locally

1. Open https://docs.gitlab.com/ee/user/infrastructure/#integrated-kubernetes-management
2. Check spelling for the section related to "beased" wordings

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