replace sling-launchpad-jackrabbit by sling-launchpad-jackrabbit-derby

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1677645 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/fling/README.md b/fling/README.md
index ec70ff8..3ba4543 100644
--- a/fling/README.md
+++ b/fling/README.md
@@ -23,7 +23,7 @@
 To install the required bundles/features on _Apache Karaf_ run the commands below:
 
     karaf@root()> feature:repo-add mvn:org.apache.sling/org.apache.sling.launchpad.karaf-features/0.1.1-SNAPSHOT/xml/features
-    karaf@root()> feature:install sling-launchpad-jackrabbit
+    karaf@root()> feature:install sling-launchpad-jackrabbit-derby
     karaf@root()> feature:install sling-extension-models
     karaf@root()> feature:install sling-extension-query
     karaf@root()> feature:install sling-scripting-thymeleaf