message: fixed launch file error
diff: <!-- Localization-only mode -->
  <arg name="localization" default="false"/>
  - <arg name="initial_pose" default=""/> <!-- Format: "x y z roll pitch yaw" or "x y z qx qy qz qw". Default: see "rtabmap --params | grep RGBD/StartAtOrigin" -->
  + <arg name="initial_pose" default=""/> <!-- Format: "x y z roll pitch yaw" or "x y z qx qy qz qw". Default: see "RGBD/StartAtOrigin" doc -->
  <!-- sim time for convenience, if playing a rosbag -->
  <arg name="use_sim_time" default="false"/>
  