Update README.md

Author: UD31415

wrappers/python/applications/robots/README.md

@@ -17,7 +17,9 @@ This code could be integrated in your robotics and video processing pipe line.
 
 The dataset:
 
-|:------------: |  :----------: | :-------------:  |
+
+| Robot pose    |  Robot pose  | Robot pose      |
+|:------------: |  :----------: | :-------------: |
 [![example](data/calibration_hand_eye/calib_robot_0001.jpg)] | [![example](data/calibration_hand_eye/calib_robot_001.jpg)] | [![example](data/calibration_hand_eye/calib_robot_0002.jpg)] |
 ![example](data/calibration_hand_eye/calib_robot_0003.jpg) | ![example](data/calibration_hand_eye/calib_robot_004.jpg) | ![example](data/calibration_hand_eye/calib_robot_0005.jpg) |
 ![example](data/calibration_hand_eye/calib_robot_0006.jpg) | ![example](data/calibration_hand_eye/calib_robot_007.jpg) | ![example](data/calibration_hand_eye/calib_robot_0008.jpg) |