Update README.md

README.md

@@ -161,7 +161,7 @@ static_pcd: point cloud from the static camera view, shape: (200, 200, 3)
 static_rgb: RGB image from the static camera view, shape: (200, 200, 3)
 gripper_pcd: point cloud from the wrist camera view, shape: (84, 84, 3)
 gripper_rgb: RGB image from the wrist camera view, shape: (84, 84, 3)
-annotation_id: episode annotation identifier. type: int
+annotation_id: episode annotation identifier, type: int
 ```
 
 **Note:** `static_cam_ex_mat` and `gripper_cam_ex_mat` are deprecated and are no longer used in the current pipeline.