Update README.md

Author: wuhaixu2016

README.md

@@ -88,7 +88,7 @@ If you find this repo useful, please cite our paper.
 ## Contact
 If you have any questions or suggestions, feel free to contact:
 
-- Haixu Wu (whx23@mails.tsinghua.edu.cn)
+- Haixu Wu (wuhx23@mails.tsinghua.edu.cn)
 - Tengge Hu (htg21@mails.tsinghua.edu.cn)
 - Haoran Zhang (z-hr20@mails.tsinghua.edu.cn)