Fix gripper mimic joint example.

Author: livanov93

ign_ros2_control_demos/launch/gripper_mimic_joint_example.launch.py

@@ -55,7 +55,7 @@ def generate_launch_description():
     )
 
     ignition_spawn_entity = Node(
-        package='ros_ign_gazebo',
+        package='ros_gz_sim',
         executable='create',
         output='screen',
         arguments=['-string', doc.toxml(),
@@ -79,8 +79,8 @@ def generate_launch_description():
         # Launch gazebo environment
         IncludeLaunchDescription(
             PythonLaunchDescriptionSource(
-                [os.path.join(get_package_share_directory('ros_ign_gazebo'),
-                              'launch', 'ign_gazebo.launch.py')]),
+                [os.path.join(get_package_share_directory('ros_gz_sim'),
+                              'launch', 'gz_sim.launch.py')]),
             launch_arguments=[('ign_args', [' -r -v 4 empty.sdf'])]),
         RegisterEventHandler(
             event_handler=OnProcessExit(