MIT License badge link update

Author: haipinglu

README.md

@@ -3,7 +3,7 @@
 <!-- <div align="center"> -->
 <a href="https://pytorch.org/get-started/locally/"><img alt="PyTorch" src="https://img.shields.io/badge/PyTorch-ee4c2c?logo=pytorch&logoColor=white"></a>
 <a href="https://hydra.cc/"><img alt="Config: Hydra" src="https://img.shields.io/badge/Config-Hydra-89b8cd"></a>
-[![GitHub license](https://badgen.net/github/license/Naereen/Strapdown.js)](https://github.com/peizhenbai/MapDiff/blob/main/LICENSE)
+[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/peizhenbai/MapDiff/blob/main/LICENSE)
 
 <!-- </div> -->
 ## Introduction