Update README.md (#31)

README.md

@@ -6,12 +6,12 @@ can easily log your sets and reps and view your progress over time.
 ## Technologies
 
 ![Java](https://img.shields.io/badge/java-%23ED8B00.svg?style=for-the-badge&logo=java&logoColor=white) ![Apache Maven](https://img.shields.io/badge/Apache%20Maven-C71A36?style=for-the-badge&logo=Apache%20Maven&logoColor=white) ![Spring](https://img.shields.io/badge/spring-%236DB33F.svg?style=for-the-badge&logo=spring&logoColor=white)
-![Git](https://img.shields.io/badge/git-%23F05033.svg?style=for-the-badge&logo=git&logoColor=white) ![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white) ![Mongo](https://img.shields.io/badge/MongoDB-%234ea94b.svg?&style=for-the-badge&logo=mongodb&logoColor=white)  ![Docker](https://img.shields.io/badge/docker%20-%230db7ed.svg?&style=for-the-badge&logo=docker&logoColor=white)
+![Git](https://img.shields.io/badge/git-%23F05033.svg?style=for-the-badge&logo=git&logoColor=white) ![GitHub](https://img.shields.io/badge/github-%23121011.svg?style=for-the-badge&logo=github&logoColor=white) ![Docker](https://img.shields.io/badge/docker%20-%230db7ed.svg?&style=for-the-badge&logo=docker&logoColor=white)
 
 - Java 11
 - Apache Maven
 - Spring Boot
-- MongoDB
+- PostgreSQL
 - Docker
 - Webhooks
 
@@ -27,4 +27,4 @@ branch if they meet our quality standards.
 
 ## License
 
-RepCounterBot is licensed under the [Apache 2.0 License](LICENSE).
+RepCounterBot is licensed under the [Apache 2.0 License](LICENSE).