Updated README.md

Author: lfeldman

README.md

@@ -16,7 +16,7 @@ If you don't have the required permissions and quota, contact your tenancy admin
 
 ## Deploy Using Oracle Resource Manager
 
-1. Click [![Deploy to Oracle Cloud](https://oci-resourcemanager-plugin.plugins.oci.oraclecloud.com/latest/deploy-to-oracle-cloud.svg)](https://console.us-phoenix-1.oraclecloud.com/resourcemanager/stacks/create?region=home&zipUrl=https://github.com/oracle-quickstart/oci-redis/raw/master/resource-manager/oci-redis.zip)
+1. Click [![Deploy to Oracle Cloud](https://oci-resourcemanager-plugin.plugins.oci.oraclecloud.com/latest/deploy-to-oracle-cloud.svg)](https://cloud.oracle.com/resourcemanager/stacks/create?region=home&zipUrl=https://github.com/oracle-quickstart/oci-redis/raw/master/resource-manager/oci-redis.zip)
 
     If you aren't already signed in, when prompted, enter the tenancy and user credentials.
 
@@ -64,6 +64,9 @@ region = "<oci_region>"
 # Compartment
 compartment_ocid = "<compartment_ocid>"
 
+# Availablity Domain 
+availablity_domain_name = "<availablity_domain_name>" # for example "GrCH:US-ASHBURN-AD-1"
+
 ````
 
 ### Create the Resources