fn about(command: &Command) -> impl ViewSequence<AppState> {
    if let Some(short_about) = command.get_about() {
        if let Some(long_about) = command.get_long_about() {
            return Some(el::details((
                el::summary(short_about.to_string()),
                el::blockquote(long_about.to_string()),
            )));
        }
    }
    None
}