Update README.md

README.md

@@ -81,10 +81,10 @@ For Chinese users, try [![bilibili](cover.png)](https://www.bilibili.com/video/B
 ## 1.LICENSE
 This work is licensed under MIT license. International License and is provided for academic purpose. If you are interested in our project for commercial purposes, please contact us on [email protected] for further communication. 
 
-If you face any problem when using this dataset, feel free to propose an issue. And if you find our dataset helpful in your research, simply give this project a 
+If you face any problem when using this dataset, feel free to propose an issue. And if you find our dataset helpful in your research, simply give this project a star
 . 
 
-The paper has been accepted by both [RA-L](https://www.ieee-ras.org/publications/ra-l/) and [ICRA 2022](https://icra2022.org/). A preprint version of the paper in [Arxiv](https://arxiv.org/abs/2112.13659) and [IEEE RA-L](https://ieeexplore.ieee.org/document/9664374).If you use M2DGR in an academic work, please cite:
+The paper has been accepted by both [RA-L](https://www.ieee-ras.org/publications/ra-l/) and [ICRA 2022](https://icra2022.org/). The paper is provided in [Arxiv version](https://arxiv.org/abs/2112.13659) and [IEEE RA-L version](https://ieeexplore.ieee.org/document/9664374).If you use M2DGR in an academic work, please cite:
 ~~~
 @article{yin2021m2dgr,
   title={M2dgr: A multi-sensor and multi-scenario slam dataset for ground robots},