Merge pull request #250816 from shellyhaverkamp/sept-release-notes

added card; updated text

Author: Jill Grant

articles/healthcare-apis/index.yml

@@ -11,13 +11,16 @@ metadata:
   ms.topic: hub-page # Required
   author: msjasteppe #Required; your GitHub user alias, with correct capitalization.
   ms.author: jasteppe #Required; microsoft alias of author; optional team alias.
-  ms.date: 08/15/2023 #Required; mm/dd/yyyy format.
+  ms.date: 09/08/2023 #Required; mm/dd/yyyy format.
 
 highlightedContent:
   items:
        -  title: What is Azure Health Data Services?
           itemType: overview
           url: ./healthcare-apis-overview.md
+       -  title: Release notes
+          itemType: whats-new
+          url: ./release-notes.md          
        -  title: Get an access token
           itemType: how-to-guide
           url: ./get-access-token.md