Update WidowX 250 model name

Author: stephane-caron

README.md

@@ -47,7 +47,7 @@ A curated list of awesome robot descriptions in URDF, Xacro or MJCF formats.
 | UR5 | Universal Robots | [URDF](https://github.com/Gepetto/example-robot-data/blob/master/robots/ur_description/urdf/ur5_robot.urdf), [Xacro](https://github.com/ros-industrial/universal_robot/blob/kinetic-devel/ur_description/urdf/ur5.urdf.xacro) | Apache-2.0 | ✔️ | ✔️ | ✔️ |
 | UR5e | Universal Robots | [MJCF](https://github.com/deepmind/mujoco_menagerie/tree/main/universal_robots_ur5e), [Xacro](https://github.com/ros-industrial/universal_robot/blob/kinetic-devel/ur_e_description/urdf/ur5e.urdf.xacro) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |
 | ViperX 300 | Trossen Robotics | [Xacro](https://github.com/Interbotix/interbotix_ros_manipulators/blob/main/interbotix_ros_xsarms/interbotix_xsarm_descriptions/urdf/vx300s.urdf.xacro), [MJCF](https://github.com/google-deepmind/mujoco_menagerie/tree/main/trossen_vx300s) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |
-| WidowX | Trossen Robotics | [MJCF](https://github.com/google-deepmind/mujoco_menagerie/tree/main/trossen_wx250s) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |
+| WidowX 250 | Trossen Robotics | [MJCF](https://github.com/google-deepmind/mujoco_menagerie/tree/main/trossen_wx250s) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |
 | xArm5 | UFACTORY | [Xacro](https://github.com/xArm-Developer/xarm_ros2/blob/master/xarm_description/urdf/xarm5/xarm5.urdf.xacro) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |
 | xArm6 | UFACTORY | [Xacro](https://github.com/xArm-Developer/xarm_ros2/blob/master/xarm_description/urdf/xarm6/xarm6.urdf.xacro) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |
 | xArm7 | UFACTORY | [Xacro](https://github.com/xArm-Developer/xarm_ros2/blob/master/xarm_description/urdf/xarm7/xarm7.urdf.xacro), [MJCF](https://github.com/google-deepmind/mujoco_menagerie/tree/main/ufactory_xarm7) | BSD-3-Clause | ✔️ | ✔️ | ✔️ |