Changed reference to Giftcard demo tutorial with Bikerental demo tuto…

…rial

docs/reference/modules/ROOT/pages/index.adoc

@@ -4,7 +4,7 @@ Welcome to the Axon Framework's documentation. It provides information about the
 
 Axon Framework alone significantly simplifies the software development process of JVM-based applications. However, it adds even more value when used in combination with other products of the Axon family.
 
-The  documentation is a valuable source of reference during the development process. For step-by-step instructions and examples of how to build Axon-based applications, use the xref:home::tutorials.adoc[].
+The  documentation is a valuable source of reference during the development process. For step-by-step instructions and examples of how to build Axon-based applications, you can check the xref:bikerental-demo::index.adoc[] tutorial.
 
 == Documentation structure