core/homeassistant/components/demo/translations/en.json

{
    "options": {
        "step": {
            "options_1": {
                "data": {
                    "bool": "Optional boolean",
                    "int": "Numeric input"
                }
            },
            "options_2": {
                "data": {
                    "multi": "Multiselect",
                    "select": "Select an option",
                    "string": "String value"
                }
            }
        }
    },
    "title": "Demo"
}