Aviate: Add aviate banner

userguide/aviate/what_is_aviate.adoc

@@ -1,5 +1,7 @@
 = What Is Aviate?
 
+include::{sourcedir}/aviate/includes/aviate-card.adoc[]
+
 == About Aviate
 Aviate is designed to deliver a seamless billing experience that builds upon the core capabilities of Kill Bill. Our goal is to provide users with advanced features that cover the entire quote-to-cash lifecycle, including enhanced system observability, streamlined configurations, and valuable business intelligence.
 
@@ -9,4 +11,4 @@ As part of the Beta program, you'll have access to early feature releases direct
 == Aviate Plugin
 For Beta customers, we offer the *Aviate plugin*. This plugin extends Kill Bill with additional endpoints specifically for the Beta phase, allowing early access to some of Aviate's backend features. These endpoints are detailed in the *Aviate section* below.
 
-Please refer to the endpoint documentation below to start integrating Aviate into your Kill Bill environment.
+Please refer to the documentation below to start integrating Aviate into your Kill Bill environment.