[8.15] [Request][8.15 & Serverless] AI Assistant for rule creation (backport #5598)

[mergify]

Fixes #5518

Previews:

• 8.15 - Updated the description of what users can do with AI Assistant when interacting with rules (see second item in the list)
• Serverless - Same as above.

  ---

  This is an automatic backport of pull request [Request][8.15 & Serverless] AI Assistant for rule creation #5598 done by Mergify.

[mergify]

Cherry-pick of 1617d22 has failed:

On branch mergify/bp/8.15/pr-5598
Your branch is up to date with 'origin/8.15'.

You are currently cherry-picking commit 1617d22b.
  (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/AI-for-security/ai-security-assistant.asciidoc

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   docs/serverless/AI-for-security/ai-assistant.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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