Fix keyword argument typo

Author: stephane-caron

robot_descriptions/_descriptions.py

@@ -60,7 +60,9 @@ def has_urdf(self) -> bool:
         Format.MJCF, tags={"end_effector"}
     ),
     "adam_lite_mj_description": Description(Format.MJCF, tags={"humanoid"}),
-    "aero_hand_open_description": Description(Format.URDF, targs={"end_effector"}),
+    "aero_hand_open_description": Description(
+        Format.URDF, tags={"end_effector"}
+    ),
     "aliengo_description": Description(Format.URDF, tags={"quadruped"}),
     "aliengo_mj_description": Description(Format.MJCF, tags={"quadruped"}),
     "allegro_hand_description": Description(