Change type alias to struct
//! }
//!
//! // `Model` describes our app state.
-//! type Model = i32;
+//! struct Model { counter:i32 }
//!
//! // `Msg` describes the different events you can modify state with.
//! enum Msg {
//! // `update` describes how to handle each `Msg`.
//! fn update(msg: Msg, model: &mut Model, _: &mut impl Orders<Msg>) {
//! match msg {
-//! Msg::Increment => *model += 1,
+//! Msg::Increment => *model.counter += 1,
//! }
//! }
//!
//! "This is a counter: ",
//! C!["counter"],
//! button![
-//! model,
+//! model.counter,
//! ev(Ev::Click, |_| Msg::Increment),
//! ],
//! ]
