Update TOC.yml

Author: sethmanheim

azure-local/TOC.yml

@@ -167,7 +167,7 @@ items:
 
 - name: Enable
   items:
-  - name: SDN enabled by Azure Arc (Preview)
+  - name: SDN enabled by Azure Arc
     items:
     - name: Overview
       href: concepts/sdn-overview.md
@@ -679,4 +679,4 @@ items:
     href: https://azure.com/hci
   - name: Pricing
     href: https://azure.microsoft.com/products/local/#Pricing
-  
+