Update rbac-migration.md

Updated issue with link syntax

Author: Gerardo Andrés Riaño Briceño

articles/key-vault/general/rbac-migration.md

@@ -120,7 +120,7 @@ Using the Azure Policy service, you can govern RBAC permission model migration a
 1. Select **Assign policy** at the top of the page. This button opens to the Policy assignment page.
 1. Enter the following information:
     - Define the scope of the policy by choosing the subscription and resource group over which the policy will be enforced. Select by clicking the three-dot button at on **Scope** field.
-    - Select the name of the policy definition: "[[Preview]: Azure Key Vault should use RBAC permission model]([url](https://portal.azure.com/#view/Microsoft_Azure_Policy/PolicyDetailBlade/definitionId/%2Fproviders%2FMicrosoft.Authorization%2FpolicyDefinitions%2F12d4fa5e-1f9f-4c21-97a9-b99b3c6611b5))"
+    - Select the name of the policy definition: "[[Preview]: Azure Key Vault should use RBAC permission model](https://portal.azure.com/#view/Microsoft_Azure_Policy/PolicyDetailBlade/definitionId/%2Fproviders%2FMicrosoft.Authorization%2FpolicyDefinitions%2F12d4fa5e-1f9f-4c21-97a9-b99b3c6611b5)"
     - Go to the **Parameters** tab at the top of the page and define the desired effect of the policy (Audit, Deny, or Disabled). 
 1. Fill out any additional fields. Navigate the tabs clicking on **Previous** and **Next** buttons at the bottom of the page.
 1. Select **Review + create**