Update README.md

examples/mattermost/README.md

@@ -11,6 +11,4 @@ The bind volume permissions must be adjusted:
 sudo chown -R 2000:2000 /mnt/docker-volumes/mattermost/*
 ````
 
-Then rename `env.example` to `.env` and adjust to your needs.
-
 Finally, run `docker compose up` to spawn the container.