Use "docker compose" instead of "docker-compose"

**Is your feature request related to a problem? Please describe.**
Docker compose V2 is baked into the docker binary since [April](https://www.docker.com/blog/announcing-compose-v2-general-availability/) this year, and V1 is deprecated. You invoke V1 via `docker-compose` and you invoke V2 via `docker compose`.

At the moment, users can change their config to use `docker compose` instead of `docker-compose` (see [here](https://github.com/jesseduffield/lazydocker/blob/master/docs/Config.md#default)). The default value is set in the code [here](https://github.com/jesseduffield/lazydocker/blob/master/pkg/config/app_config.go#L334).

We need to do a couple things:
1) Update all mentions of 'docker-compose' in the repo to now say 'docker compose'
2) Add a section in the config [doc](https://github.com/jesseduffield/lazydocker/blob/master/docs/Config.md) to explain how to switch back to `docker-compose`

One thing worth thinking about is: should we have some code that runs on startup which checks if your docker version contains compose V2 and if not, fall back to using `docker-compose`? I would prefer to instead just have a popup that comes up after they've updated to the latest lazydocker which says if they're still using `docker-compose` they should update the config to use that, or instead update their docker binary to the latest version.