Replace dead link to github.io docs with wiki docs

README.asciidoc

@@ -8,7 +8,10 @@ or subscribe to the link:https://lists.jboss.org/mailman/listinfo/windup-dev[win
 == Get involved
 
 * Windup Wiki: https://github.com/windup/windup/wiki
-* Windup documentation (generated from above wiki): http://windup.github.io/windup/docs/latest/html/WindupUserGuide.html
+  ** Windup documentation is on the wiki:
+    https://github.com/windup/windup/wiki/User-Guide[User Guide],
+    https://github.com/windup/windup/wiki/Rules-Development-Guide[Rules Development Guide],
+    https://github.com/windup/windup/wiki/Core-Development-Guide[Core Development Guide]
 * Forums: https://community.jboss.org/en/windup
 * Issue Tracker: https://issues.jboss.org/browse/WINDUP
 * Users Mailing List: windup-users@lists.jboss.org