messaging hostname guideline updates

Author: nasark

_includes/configuration.md

@@ -54,7 +54,7 @@ Configuring messaging is required for appliance setup. It is recommended to conf
 2. Select **Proceed** and appliance_console will apply the configuration that you have
    requested then restart evmserverd to pick up the changes.
 
-**Note:** It is recommended to use your FQDN as the messaging hostname rather than `localhost`
+**Note:** It is recommended to use your Fully Qualified Domain Name (FQDN) as the messaging hostname rather than `localhost`
 
 ### Configuring a Worker Appliance
 

installing_on_aws/index.md

@@ -7,7 +7,7 @@
 
 {% include configuration.md %}
 
-**Note:** When configuring messaging, please refer to https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-naming.html on hostname guidelines i.e. inclusion of `.ec2.internal` or `.compute.internal` in the hostname
+**Note:** When configuring messaging, please refer to [Amazon EC2 instance hostname types](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-naming.html) on hostname guidelines. For example, inclusion of `.ec2.internal` or `.compute.internal` in the hostname, which can be determined using `hostname -f`.
 
 {% include initial-login.md %}