Update README.md

README.md

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 <h1> Bio Server </h1>
 
-![Vue.js](https://img.shields.io/badge/vuejs-%2335495e.svg?style=for-the-badge&logo=vuedotjs&logoColor=%234FC08D)
-![NPM](https://img.shields.io/badge/NPM-%23CB3837.svg?style=for-the-badge&logo=npm&logoColor=white)
-![CSS3](https://img.shields.io/badge/css3-%231572B6.svg?style=for-the-badge&logo=css3&logoColor=white)
+![Go](https://img.shields.io/badge/go-%2300ADD8.svg?style=for-the-badge&logo=go&logoColor=white)
+![MongoDb](https://img.shields.io/badge/MongoDB-4EA94B?style=for-the-badge&logo=mongodb&logoColor=white)
+
 
 [Università La Sapienza Roma](https://www.uniroma1.it/en), [Dipartimento di Informatica](https://www.studiareinformatica.uniroma1.it/)