Correct name of new description

Author: stephane-caron

README.md

@@ -201,7 +201,7 @@ The DOF column denotes the number of actuated degrees of freedom.
 | Name                          | Robot                 | DOF | Format     |
 |-------------------------------|-----------------------|-----|------------|
 | `double_pendulum_description` | Double Pendulum       | 2   | URDF       |
-| `dynamixel_2r`                | Dynamixel 2R          | 1   | MJCF       |
+| `dynamixel_2r_mj_description` | Dynamixel 2R          | 1   | MJCF       |
 | `finger_edu_description`      | FingerEdu             | 3   | URDF       |
 | `simple_humanoid_description` | Simple Humanoid       | 29  | URDF       |
 | `trifinger_edu_description`   | TriFingerEdu          | 9   | URDF       |

robot_descriptions/_descriptions.py

@@ -95,7 +95,9 @@ def has_urdf(self) -> bool:
     "double_pendulum_description": Description(
         Format.URDF, tags={"educational"}
     ),
-    "dynamixel_2r": Description(Format.MJCF, tags={"educational"}),
+    "dynamixel_2r_mj_description": Description(
+        Format.MJCF, tags={"educational"}
+    ),
     "draco3_description": Description(Format.URDF, tags={"humanoid"}),
     "edo_description": Description(Format.URDF, tags={"arm"}),
     "elf2_description": Description(Format.URDF, tags={"humanoid"}),