[8.15] [DOCS] Updates screenshots in AIOps Labs docs (#188851) (#188945)

# Backport

This will backport the following commits from `main` to `8.15`:
- [[DOCS] Updates screenshots in AIOps Labs docs
(#188851)](#188851)

<!--- Backport version: 8.9.7 -->

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Updates screenshots in AIOps Labs docs (#188851)\n\n##
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Updates screenshots in AIOps Labs docs (#188851)\n\n##
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Co-authored-by: István Zoltán Szabó <[email protected]>

docs/user/ml/index.asciidoc

@@ -178,8 +178,6 @@ image::user/ml/images/ml-log-rate-analysis.png[Log rate spike explained]
 [[log-pattern-analysis]]
 === Log pattern analysis
 
-preview::[]
-
 // The following intro is used on the `run-pattern-analysis-discover` page.
 //tag::log-pattern-analysis-intro[]
 Log pattern analysis helps you to find patterns in unstructured log messages and