Update Readme with new Docker Compose command

[umangutkarsh]

The ReadMe needs to be updated with the correct Docker Compose command:

In this section: https://github.com/RocketChat/Docker.Official.Image?tab=readme-ov-file#docker-compose

The command to run both the mongo and Rocket.Chat containers is written: docker-compose up -d

Which is outdated according to this release: https://docs.docker.com/compose/migrate/#:~:text=It's%20recommended%20that%20you%20adapt,a%20docker%2Dcompose%20compatibility%20alias.