[8.9] Adds kibana namespace requirement to CNVM and CSPM (backport #5154)

[mergify]

Fixes #5107

A small change on several pages. I reviewed the previews already.

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This is an automatic backport of pull request #5154 done by Mergify.

[mergify]

Cherry-pick of 5df1b3a has failed:

On branch mergify/bp/8.9/pr-5154
Your branch is up to date with 'origin/8.9'.

You are currently cherry-picking commit 5df1b3a2.
  (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/cloud-native-security/vuln-management-get-started.asciidoc
	modified:   docs/cloud-native-security/vuln-management-overview.asciidoc

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   docs/cloud-native-security/cspm-get-started-azure.asciidoc
	deleted by us:   docs/cloud-native-security/cspm-get-started-gcp.asciidoc
	both modified:   docs/cloud-native-security/cspm-get-started.asciidoc
	both modified:   docs/cloud-native-security/cspm.asciidoc

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

[github-actions]

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