Updated TOC to removed old app service

on hub release notes and add new 
item for 25R1

Author: apwestgarth

azure-stack/operator/TOC.yml

@@ -386,16 +386,10 @@
           href: app-service-migrate-sql-server.md
       - name: Release notes
         items:
+        - name: 25R1 release notes [June 2025]
+          href: app-service-release-notes-2025R1.md
         - name: 24R1 release notes [December 2024]
           href: app-service-release-notes-2024R1.md
-        - name: 2302 release notes [February 2023]
-          href: app-service-release-notes-2302.md
-        - name: 2022 H1 release notes [October 2022]
-          href: app-service-release-notes-2022-h1.md
-        - name: 2021 Q3 release notes [December 2021]
-          href: app-service-release-notes-2021-Q3.md
-        - name: 2021 Q1 release notes [June 2021]
-          href: app-service-release-notes-2021-Q1.md
     - name: Azure Container Registry
       items:
       - name: Overview