[8.12] [DOCS][SEARCH] Reword 8.12.0 Search enhancement release note (#…

…175052) (#175059)

# Backport

This will backport the following commits from `main` to `8.12`:
- [[DOCS][SEARCH] Reword 8.12.0 Search enhancement release note
(#175052)](#175052)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

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Co-authored-by: Liam Thompson <[email protected]>

docs/CHANGELOG.asciidoc

@@ -187,7 +187,7 @@ Discover::
 Elastic Security::
 For the Elastic Security 8.12.0 release information, refer to {security-guide}/release-notes.html[_Elastic Security Solution Release Notes_].
 Elastic Search::
-*  Split details panel from model selection list ({kibana-pull}173434[#173434]).
+*  Trained models can now be deployed and started directly from the Machine Learning inference pipeline configuration flyout ({kibana-pull}173434[#173434]).
 Fleet::
 * Adds support for Elasticsearch output performance presets ({kibana-pull}172359[#172359]).
 * Adds a new `keep_monitoring_alive` flag to agent policies ({kibana-pull}168865[#168865]).