update readme.md with state names

README.md

@@ -77,10 +77,10 @@ This dataset was created using [LeRobot](https://github.com/huggingface/lerobot)
                     "x",
                     "y",
                     "z",
-                    "rx",
-                    "ry",
-                    "rz",
-                    "rw",
+                    "roll",
+                    "pitch",
+                    "yaw",
+                    "gripper",
                     "gripper"
                 ]
             }