Fixing typo and adding TOC entry

Author: mattmcinnes

articles/virtual-network/accelerated-networking-mana-on-existing-sizes.md

@@ -1,5 +1,5 @@
 ---
-title: Microsoft Azure Network Adapter (MANA) suppot for existing VM SKUs
+title: Microsoft Azure Network Adapter (MANA) support for existing VM SKUs
 description: Update for Microsoft Azure Network Adapter (MANA) support for existing VM SKUs
 author: alisheriffMSFT
 ms.service: azure-virtual-network

articles/virtual-network/toc.yml

@@ -204,6 +204,8 @@
               href: accelerated-networking-mana-linux.md
             - name: Windows VMs
               href: accelerated-networking-mana-windows.md
+            - name: MANA support for existing VM Sizes
+              href: accelerated-networking-mana-on-existing-sizes.md
         - name: Migrate a VM public IP address to a NAT gateway
           href: /azure/nat-gateway/tutorial-migrate-ilip-nat?toc=%2Fazure%2Fvirtual-network%2Ftoc.json
         - name: Network bandwidth