Update README.md

README.md

@@ -191,22 +191,19 @@ sudo apt-get install libopenmpi-dev openmpi-bin openmpi-doc
 
 The inverse kinematics function has trouble finding a solution when the arm is fully straight and the arm must bend to reach the requested point.
 
-## Acknowledgments
+## Acknowledgements
 
 This work is supported by the [DREAM project](http://www.robotsthatdream.eu) through the European Union Horizon 2020 FET research and innovation program under grant agreement No 640891.
 
 ## Citation
 
 If you use this toolbox, please cite:
 
+```
 @article{Raffin18,
-
   title={S-RL Toolbox: Environments, Datasets and Evaluation Metrics for State Representation Learning},
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   author={Raffin, Antonin and Hill, Ashley and Traor{\'e}, Ren{\'e} and Lesort, Timoth{\'e}e and D{\'\i}az-Rodr{\'\i}guez, Natalia and Filliat, David},
-
   journal={arXiv preprint arXiv:1809.09369},
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   year={2018}
-
 }
+```