fix topic name

ros3rag.placeA/src/main/java/de/tudresden/inf/st/placeA/MainA.java

@@ -27,7 +27,7 @@ public class MainA {
   private final static String TOPIC_STATUS = "place-a/status";
   private final static String TOPIC_EXIT = "place-a/exit";
 
-  private final static String TOPIC_SCENE_INIT = "place-a/init";
+  private final static String TOPIC_SCENE_INIT = "place-a/scene/init";
   private final static String TOPIC_SCENE_UPDATE_FROM_ROS = "place-a/scene/update";
   private final static String TOPIC_SCENE_UPDATE_TO_PLACE_B = "place-a/logical/update";