[Documentation] EC2 Guide - updates for 7.1 images

Book "Deploying Red Hat JBoss Enterprise Application Platform on Amazon EC2" needs some updates for 7.1.

1, In chapter 2, the numbers on the screenshot are not matched to the numbers on the steps in the description. For example, the number 1 on the screenshot shows the AMIs button, but the step number 2. tells the user to click on that.

2, The example AMI name mentions a 7.0.0 image:
RHEL-7.2_HVM_GA-JBEAP-7.0.0-20160516-x86_64-1-Access2-GP2.
This should either show the true name of one of the 7.1 Beta images or should be somehow generalized to contain the current EAP major and minor version.

If you want to have the actual name of an EAP 7.1 Beta image there, you'll need to sync with someone from RCM - either cobrien_redhat or sgajanur@redhat.com.