add link to redback core website
diff --git a/src/site/site.xml b/src/site/site.xml
index 535b684..e1faccc 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -74,6 +74,7 @@
     <menu name="Development">
       <item name="Extending Redback Authentication" href="development/extending-authn.html"/>
       <item name="Redback Components" href="http://archiva.apache.org/redback/components"/>
+      <item name="Redback Core" href="http://archiva.apache.org/redback/core"/>
     </menu>
     
     <menu ref="reports" />