Update modules/ROOT/pages/8.4.0-release-notes.adoc

Co-authored-by: Millie <millie.macdonald@tiny.cloud>

Author: kemister85

modules/ROOT/pages/8.4.0-release-notes.adoc

@@ -47,7 +47,7 @@ Behind the UI sits a production-ready **TinyMCE AI** service with JWT authentica
 
 **What this means for users** (the outcomes the interface is built for):
 
-* Move first drafts forward and refine tone without leaving the editor.
+* Move drafts forward and refine tone without leaving the editor.
 * Summarize, adjust length, and improve clarity with guided flows.
 * Keep brand and policy guardrails in reach through permissions and review-style workflows.