Resolve "Map factory"

Closes #405 (closed)

include/core/map/map_base.h

@@ -54,7 +54,7 @@ MapBasePtr create(const ParamsMapBasePtr _params)                       \
  */
 struct ParamsMapBase: public ParamsBase
 {
-    std::string prefix = "map/";
+    std::string prefix = "map";
 
     ParamsMapBase(const ParamsServer& _param_server) :
         ParamsBase("map", _param_server)