more toc work

Author: markingmyname

articles/mysql/TOC.yml

@@ -20,6 +20,7 @@
 - name: Azure Database for MySQL - Flexible Server
   items:
   - name: Overview
+    expanded: true
     items:
       - name: What's new?
         href: flexible-server/whats-new.md
@@ -38,7 +39,6 @@
       - name: Service tiers
         href: flexible-server/concepts-service-tiers-storage.md
   - name: Quickstarts
-    expanded: true
     items:
       - name: Create an Azure Database for MySQL - Flexible Server instance
         items:
@@ -160,7 +160,7 @@
       - name: Data encryption
         href: flexible-server/concepts-customer-managed-key.md
       - name: Threat protection with Microsoft Defender for Cloud
-        href: ../defender-for-cloud/defender-for-databases-introduction?toc=/azure/mysql/toc.json&bc=/azure/mysql/breadcrumb/toc.json
+        href: ../security-center/defender-for-databases-introduction?toc=/azure/mysql/toc.json&bc=/azure/mysql/breadcrumb/toc.json
   - name: Integrations
     items:
     - name: Automation tasks
@@ -360,7 +360,6 @@
       - name: Pricing tiers
         href: single-server/concepts-pricing-tiers.md
   - name: Quickstarts
-    expanded: true
     items:
     - name: Create an Azure Database for MySQL - Single Server instance
       items: