update readme

README.md

@@ -15,9 +15,9 @@ If you find the resource is useful, please cite the following paper in your work
 ```
 @article{easynlp, 
 title = {EasyNLP: A Comprehensive and Easy-to-use Toolkit for Natural Language Processing},   		
-	publisher = {arXiv}, 
-  author = {Wang, Chengyu and Qiu, Minghui and Zhang, Taolin and Liu, Tingting and Li, Lei and Wang, Jianing and Wang, Ming and Huang, Jun and Lin, Wei}, 
-  url = {https://arxiv.org/abs/2205.00258}, 
-  year = {2022} 
+publisher = {arXiv}, 
+author = {Wang, Chengyu and Qiu, Minghui and Zhang, Taolin and Liu, Tingting and Li, Lei and Wang, Jianing and Wang, Ming and Huang, Jun and Lin, Wei}, 
+url = {https://arxiv.org/abs/2205.00258}, 
+year = {2022} 
 } 
 ```