Update TOC.yml

Author: hilaryw29

articles/virtual-machine-scale-sets/TOC.yml

@@ -183,7 +183,7 @@
       maintainContext: true
     - name: Extension sequencing on scale sets
       href: virtual-machine-scale-sets-extension-sequencing.md
-    - name: Application Health extension (preview)
+    - name: Application Health extension
       href: virtual-machine-scale-sets-health-extension.md
 - name: Monitoring
   items: