fix LICENSE link

Author: nuysoft

README.md

@@ -28,4 +28,4 @@ If you have any questions, please feel free to ask through [New Issue](https://g
 Make sure the problem you're addressing is reproducible. Use <http://jsbin.com/> or <http://jsfiddle.net/> to provide a test page. Indicate what browsers the issue can be reproduced in. What version of Mock.js is the issue reproducible in. Is it reproducible after updating to the latest version?
 
 ## License
-Mock.js is available under the terms of the [MIT License](./MIT-LICENSE.txt).
+Mock.js is available under the terms of the [MIT License](./LICENSE).