Clarify verification step on setup-install page

[robert-cronin]

When I follow the tutorial at https://docs.guac.sh/setup-install/ and try to verify that guac is running in step 2, the docker compose ls --filter "name=guac" command returns empty because the stack is given a name corresponding to the directory which contains the compose file: https://docs.docker.com/get-started/workshop/08_using_compose/#see-the-app-stack-in-docker-dashboard:~:text=By%20default%2C%20the,was%20located%20in

Example output:

❯ docker compose ls --filter "name=guac"

NAME                STATUS              CONFIG FILES
❯ docker compose ls

NAME                STATUS              CONFIG FILES
tmpg5jwvtesf2       running(6)          /tmp/tmp.G5jWvtesf2/guac-demo-compose.yaml

I think we can avoid potential confusion by specifying the project name in the preceding step, I'll open a PR!