updated link

README.md

@@ -114,7 +114,7 @@ This is the ***Hard set*** of our SRSD-Feynman datasets, which consists of the f
 | B20       | \\(A = \frac{\alpha^2 h^2}{4 \pi m^2 c^2} \left(\frac{\omega_0}{\omega}\right)^2 \left(\frac{\omega_0}{\omega}+\frac{\omega}{\omega_0}-\sin^2\theta\right)\\) |
 
 
-More details of these datasets such as variables and sampling ranges are provided in [the paper and its supplementary material](https://openreview.net/forum?id=MPrcwjMgL3d).  
+More details of these datasets such as variables and sampling ranges are provided in [the paper and its supplementary material](https://arxiv.org/abs/2206.10540).  
 
 
 ### Supported Tasks and Leaderboards