Update release-notes/fleet-elastic-agent/index.md

Co-authored-by: Colleen McGinnis <[email protected]>

Author: vishaangelova

release-notes/fleet-elastic-agent/index.md

@@ -28,13 +28,7 @@ To check for security updates, go to [Security announcements for the Elastic sta
 
 ## 9.1.2 [fleet-elastic-agent-9.1.2-release-notes]
 
-### Features and enhancements [fleet-elastic-agent-9.1.2-features-enhancements]
-
-There are no new features or enhancements in this release.
-
-### Fixes [fleet-elastic-agent-9.1.2-fixes]
-
-There are no fixes in this release.
+There are no new features, enhancements, or fixes in this release.
 
 ## 9.1.1 [fleet-elastic-agent-9.1.1-release-notes]