docs: use new docker compose command (#3054)

Improve the Docker install documentation, along with the `docker
compose` commands.
libretime/libretime@70735d4

docs/admin-manual/install/install-using-docker.md

@@ -22,7 +22,7 @@ First, set the version you want to install:
 echo LIBRETIME_VERSION="{vars.version}" > .env
 </CodeBlock>
 
-Download the docker-compose files from the repository:
+Download the docker compose files from the repository:
 
 ```bash
 # Load LIBRETIME_VERSION variable
@@ -106,16 +106,16 @@ You can find more details in the `docker-compose.yml` file or on the external se
 Next, run the following commands to setup the database:
 
 ```bash
-docker-compose run --rm api libretime-api migrate
+docker compose run --rm api libretime-api migrate
 ```
 
 Finally, start the services, and check that they're running using the following commands:
 
 ```bash
-docker-compose up -d
+docker compose up -d
 
-docker-compose ps
-docker-compose logs -f
+docker compose ps
+docker compose logs -f
 ```
 
 ## Securing LibreTime