[7.1 Alpha Release Notes] Update title of Configure a Listener to Receive Management Subsystem Notifications

Configure a Listener to Receive Management Subsystem Notifications

I believe this is about EAP7-471/472.

A better title is "Configure a Listener to Receive Notification of Server Lifecycle Events". Then, "In JBoss EAP 7.1, you can configure a Listener to receive notifications from the Management system of server and host controller lifecycle events."

EAP7-471/472 is not a generic management notification facility and isn't about notifications from subsystems. The kernel management layer also shouldn't be referred to as a subsystem as the word has an important more precise meaning in EAP.

https://issues.jboss.org/browse/JBEAP-8941?focusedCommentId=13382507&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13382507