docker_compose(role): move argument documentation to README

Do this to match newer roles and since reading documentation from
argument_specs is quite unergonomic.

roles/docker_compose/README.md

@@ -11,7 +11,14 @@ Should work on Debian-based distributions.
 
 ## Required Arguments
 
-For the required arguments look at the [`argument_specs.yaml`](./meta/argument_specs.yaml).
+- `docker_compose__compose_file_content`: The content to deploy to the Compose file at `/ansible_docker_compose/compose.yaml`.
+
+## Optional Arguments
+
+- `docker_compose__env_file_content`: The content to deploy to the `.env` file at `/ansible_docker_compose/.env`.
+- `docker_compose__configuration_files`: A list of configuration files to deploy to the `/ansible_docker_compose/configs/` directory.
+- `docker_compose__configuration_files.*.name`: The name of the configuration file.
+- `docker_compose__configuration_files.*.content`: The content to deploy to the configuration file.
 
 ## Links & Resources
 

roles/docker_compose/meta/argument_specs.yaml

@@ -2,31 +2,20 @@ argument_specs:
   main:
     options:
       docker_compose__compose_file_content:
-        description: >-
-          The content of the Compose file at
-          `/ansible_docker_compose/compose.yaml`.
         type: str
         required: true
       docker_compose__env_file_content:
-        description: >-
-          The content of the .env file at
-          `/ansible_docker_compose/.env`.
         type: str
         required: false
       docker_compose__configuration_files:
-        description: >-
-          A list of configuration files to be deployed in the
-          `/ansible_docker_compose/configs/` directory.
         type: list
         elements: dict
         required: false
         default: [ ]
         options:
           name:
-            description: The name of the configuration file.
             type: str
             required: true
           content:
-            description: The content of the configuration file.
             type: str
             required: true