core/homeassistant/components/command_line/strings.json

{
  "issues": {
    "deprecated_platform_yaml": {
      "title": "Command Line YAML configuration has moved",
      "description": "Configuring Command Line `{platform}` using YAML has moved.\n\nConsult the documentation to move your YAML configuration to integration key and restart Home Assistant to fix this issue."
    }
  }
}