Please document how to pass a linelist argument on the command line

[opyate]

When I run pytest --help, I see (amongst other things):

env_files (linelist): a line separated list of env files to parse

I know how to specify this var in pyproject.toml or pytest.ini, but how do I pass it as a CLI argument?

[BeyondEvil]

I don't thing that option originates with this plugin @opyate