[8.15] [bug] Fixes support matrix bug in k8s dashboard doc (backport #5882)

[mergify]

Fixes #5880 by updating the supporting matrix on the K8s dashboard page (ESS and serverless)

Preview: K8s dashboard

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This is an automatic backport of pull request #5882 done by Mergify.

[mergify]

Cherry-pick of d887c55 has failed:

On branch mergify/bp/8.15/pr-5882
Your branch is up to date with 'origin/8.15'.

You are currently cherry-picking commit d887c555.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   docs/dashboards/kubernetes-dashboard.asciidoc

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   docs/serverless/dashboards/kubernetes-dashboard-dash.mdx

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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