Added mongoDB to the README.md

README.md

@@ -8,6 +8,7 @@ This repository has all the source code that makes Riven of a Thousand Severs wo
   - [Spring Webflux](https://spring.io/reactive) - Official documentation for Spring Reactive framework, for Project Reactor see [here](https://projectreactor.io/)
   - [Redis](https://redis.io/) - Official documentation for Redis
   - [Docker](https://www.docker.com/) - Official documentation for Docker & Docker Compose
+  - [MongoDB](https://mongodb.com) - Official documentation for MongoDB
 ## Testing
   - [JUnit5](https://junit.org/junit5/) - Official documentation for JUnit5 for testing JVM based languages
   - [Mockito](https://site.mockito.org/) - Official documentation for Mockito