Update paper.md

Author: chenzhaiyu

joss/paper.md

@@ -46,6 +46,6 @@ The core features of *abspy* include:
 
 # Acknowledgements
 
-I acknowledge the feedback provided by [Liangliang Nan](https://github.com/LiangliangNan) and [Yuqing Wang](https://github.com/wangyuqing0424), which greatly contributed to the development of this package.
+I acknowledge the feedback provided by [Liangliang Nan](https://github.com/LiangliangNan), Yuqing Wang, and Qian Bai, which greatly contributed to the development of this package.
 
 # References