change readme

Author: h0rn3t

README.md

@@ -2,7 +2,7 @@
 
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-[![License](https://img.shields.io/npm/l/xxtea-node.svg)](http://opensource.org/licenses/MIT)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![pip](https://img.shields.io/pypi/v/fastapi_async_sqlalchemy?color=blue)](https://pypi.org/project/fastapi-async-sqlalchemy/)
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