fix readme

Author: JayKuo1

README.md

@@ -7,7 +7,7 @@
 [![Paper](https://img.shields.io/badge/Paper-arXiv-red)](https://arxiv.org/abs/2507.17311)
 [![Project Page](https://img.shields.io/badge/Project-Page-green)](http://www.openearthlab.com/EarthLink)
 [![Website](https://img.shields.io/badge/Website-EarthLink-blue)](https://earthlink.intern-ai.org.cn/)
-[![License](https://img.shields.io/badge/License-CC%20BY--NC--SA%204.0-yellow.svg)](LICENSE)
+[![License](https://img.shields.io/badge/License-CC%20BY--NC--SA%204.0-yellow.svg)](https://creativecommons.org/licenses/by-nc-sa/4.0/)
 
 </div>