Update README.md

Author: andrea-mucci

README.md

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 [![Coverage](https://codecov.io/github/minos-framework/minos-python/coverage.svg?branch=main)](https://codecov.io/gh/minos-framework/minos-python)
 [![Stack Overflow](https://img.shields.io/badge/Stack%20Overflow-Ask%20a%20question-green)](https://stackoverflow.com/questions/tagged/minos)
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-[![](https://tokei.rs/b1/github/minos-framework/minos-python?category=lines)](https://github.com/minos-framework/minos-python).
+[![](https://tokei.rs/b1/github/minos-framework/minos-python?category=code)](https://github.com/minos-framework/minos-python).
 ## Summary
 
 Minos is a framework which helps you create [reactive](https://www.reactivemanifesto.org/) microservices in Python.