Remove extra brackets in markdown link syntax

Author: v-pegao

README.md

@@ -79,7 +79,7 @@ an Azure subscription. If you do not already have an Azure
 subscription, you can activate your 
 [MSDN subscriber benefits](https://azure.microsoft.com/pricing/member-offers/msdn-benefits-details/) 
 or sign up for a 
-[free Azure account]((https://azure.microsoft.com/pricing/free-trial/)).
+[free Azure account](https://azure.microsoft.com/pricing/free-trial/).
 
 In addition, you will need the following: