Merge pull request #230166 from kabharati/pacific0309

Update TOC.yml

Author: JamesJBarnett

articles/postgresql/TOC.yml

@@ -484,6 +484,8 @@
       href: flexible-server/concepts-security.md
     - name: Azure AD Authentication
       href: flexible-server/concepts-azure-ad-authentication.md
+    - name: Major Version Upgrade 
+      href: flexible-server/concepts-major-version-upgrade.md
     - name: Compliance
       href: flexible-server/concepts-compliance.md
     - name: Limits
@@ -657,10 +659,6 @@
         href: flexible-server/how-to-manage-high-availability-portal.md
       - name: Azure CLI
         href: flexible-server/how-to-configure-high-availability-cli.md
-    - name: Major version upgrade
-      items:
-      - name: Azure portal
-        href: flexible-server/how-to-perform-major-version-upgrade-portal.md
     - name: Replication
       items:
       - name: Azure portal