Fix: Fix assignment of auxTrafficSpaces to node

CityDoctorParent/Extensions/CityDoctorGUI/src/main/java/de/hft/stuttgart/citydoctor2/gui/CityDoctorController.java

@@ -704,7 +704,7 @@ public class CityDoctorController {
                 }
             }
             if (!space.getAuxTrafficSpaces().isEmpty()) {
-                CityObjectGroupNode auxTrafficSpacesGroupNode = new CityObjectGroupNode(space.getTrafficSpaces(),
+                CityObjectGroupNode auxTrafficSpacesGroupNode = new CityObjectGroupNode(space.getAuxTrafficSpaces(),
                         "AUXILIARY_TRAFFIC_SPACE", Color.YELLOW);
                 TreeItem<Renderable> auxTrafficSpacesGroupItem = new TreeItem<>(auxTrafficSpacesGroupNode);
                 root.getChildren().add(auxTrafficSpacesGroupItem);