style: change input default syntax (equivalent) to match Kicker

      default: registry.hub.docker.com/curlimages/curl:latest

    module-name:

      description: The module name. May not contain any spaces or underscores.

      default: ${CI_PROJECT_NAME}

      default: $CI_PROJECT_NAME

    module-system:

      description: 'The module system or provider (example: `local`, `aws`, `google`)'

      default: local

    module-version:

      description: The module version. It must be valid according to the [semantic versioning](https://semver.org/) specification.

      default: ${CI_COMMIT_TAG}

      default: $CI_COMMIT_TAG

    module-files:

      description: 'Glob patterns matching files to include into the Terraform module (:warning: does not support double star)'

      default: '*.tf *.tpl *.md'