message: Fix `ProgressBar` doc example in `iced_web`
diff: @@ -9,15 +9,14 @@ use std::ops::RangeInclusive;
  ///
  /// # Example
  /// ```
  -/// # use iced_native::renderer::Null;
  -/// #
  -/// # pub type ProgressBar = iced_native::ProgressBar<Null>;
  +/// use iced_web::ProgressBar;
  +///
  /// let value = 50.0;
  ///
  /// ProgressBar::new(0.0..=100.0, value);
  /// ```
  ///
  -/// ![Progress bar drawn with `iced_wgpu`](https://user-images.githubusercontent.com/18618951/71662391-a316c200-2d51-11ea-9cef-52758cab85e3.png)
  +/// ![Progress bar](https://user-images.githubusercontent.com/18618951/71662391-a316c200-2d51-11ea-9cef-52758cab85e3.png)
  #[allow(missing_debug_implementations)]
  pub struct ProgressBar {
  range: RangeInclusive<f32>,
  