Update changelog

Author: smalyshev

docs/changelog/130032.yaml

@@ -1,9 +1,12 @@
 pr: 130032
-summary: ES|QL CCS GA release notes highlight
-area: "CCS, ES|QL"
-type: docs
-issues: []
+summary: ES|QL cross-cluster querying is now generally available
+area: "ES|QL"
+type: feature
+issues: [ ]
 highlight:
-  title: ES|QL CCS GA release notes highlight
-  body: ""
+  title: ES|QL cross-cluster querying is now generally available
+  body: |-
+    The ES|QL Cross-Cluster querying feature has been in technical preview since 8.13.
+    As of releases 8.19.0 and 9.1.0 this is now generally available.
+    This feature allows you to run ES|QL queries across multiple clusters.
   notable: true