hass-core/homeassistant/components/launch_library/strings.json

{
  "config": {
    "step": {
      "user": {
        "description": "Do you want to configure the Launch Library?"
      }
    },
    "abort": {
      "single_instance_allowed": "[%key:common::config_flow::abort::single_instance_allowed%]"
    }
  }
}