Update the <subtitle> tag in the docinfo.xml files for the following guides. 

• Introduction to JBoss EAP
• Getting Started Guide
• Installation Guide
• Migration Guide
• Patching and Upgrading Guide
• Development Guide
• Developing Web Services Applications
• Developing EJB Applications
• Developing Hibernate Applications
• Managing Transactions on JBoss EAP
• Configuration Guide
• Configuring Messaging
• Security Architecture
• How to Configure Server Security
• How to Configure Identity Management
• How To Set Up SSO with SAML v2
• How to Set Up SSO with Kerberos
• Using JBoss EAP in Microsoft Azure
• Deploying JBoss EAP on Amazon Web Services
• Login Module Reference
• Performance Tuning Guide
• Management CLI Guide

Make the content relevant for the guide to help customers browsing the splash page (https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.3/).