fixed upgrade guidance syntax

Author: brianlehr

articles/virtual-network/ip-services/public-ip-basic-upgrade-guidance.md

@@ -22,13 +22,12 @@ In this article, we'll discuss guidance for upgrading your Basic SKU public IPs
 We recommend the following approach to upgrade to Standard SKU public IP addresses. 
 
 1. Learn about some of the [key differences](#basic-sku-vs-standard-sku) between Basic SKU public IP and Standard SKU public IP. 
-1. Identify the Basic SKU public IP to upgrade.
-1. Determine if you would need [Zone Redundancy]
-1. (public-ip-addresses.md#availability-zone). 
-    1. If you need a zone redundant public IP address, create a new Standard SKU public IP address using [Portal](create-public-ip-portal.md), [PowerShell](create-public-ip-powershell.md), [CLI](create-public-ip-cli.md), or [ARM template](create-public-ip-template.md).
-    1. If you do not need a zone redundant public IP address, use the [following upgrade options](#upgrade-using-portal-powershell-and-azure-cli). 
-1. Create a migration plan for planned downtime.
-1. Depending on the resource associated with your Basic SKU public IP addresses, perform the upgrade based on the following table:
+2. Identify the Basic SKU public IP to upgrade.
+3. Determine if you would need [Zone Redundancy](public-ip-addresses.md#availability-zone). 
+    a. If you need a zone redundant public IP address, create a new Standard SKU public IP address using [Portal](create-public-ip-portal.md), [PowerShell](create-public-ip-powershell.md), [CLI](create-public-ip-cli.md), or [ARM template](create-public-ip-template.md).
+    b. If you do not need a zone redundant public IP address, use the [following upgrade options](#upgrade-using-portal-powershell-and-azure-cli). 
+4. Create a migration plan for planned downtime.
+5. Depending on the resource associated with your Basic SKU public IP addresses, perform the upgrade based on the following table:
 
  | Resource using Basic SKU public IP addresses | Decision path |
   | ------ | ------ |