Fix broken intra-doc links to Sandbox

src/application.rs

@@ -15,9 +15,7 @@ pub use application::{default, Appearance, DefaultStyle};
 ///   document.
 ///
 /// An [`Application`] can execute asynchronous actions by returning a
-/// [`Command`] in some of its methods. If you do not intend to perform any
-/// background work in your program, the [`Sandbox`] trait offers a simplified
-/// interface.
+/// [`Command`] in some of its methods.
 ///
 /// When using an [`Application`] with the `debug` feature enabled, a debug view
 /// can be toggled by pressing `F12`.

src/lib.rs

@@ -134,8 +134,15 @@
 //! }
 //! ```
 //!
-//! And that's everything! We just wrote a whole user interface. Iced is now
-//! able to:
+//! And that's everything! We just wrote a whole user interface. Let's run it:
+//!
+//! ```no_run
+//! fn main() -> iced::Result {
+//!     iced::run("A cool counter", Counter::update, Counter::view)
+//! }
+//! ```
+//!
+//! Iced will automatically:
 //!
 //!   1. Take the result of our __view logic__ and layout its widgets.
 //!   1. Process events from our system and produce __messages__ for our
@@ -143,11 +150,12 @@
 //!   1. Draw the resulting user interface.
 //!
 //! # Usage
-//! The [`Application`] and [`Sandbox`] traits should get you started quickly,
-//! streamlining all the process described above!
+//! You can either use the [`application`] builder or implement the [`Application`]
+//! trait directly.
 //!
 //! [Elm]: https://elm-lang.org/
 //! [The Elm Architecture]: https://guide.elm-lang.org/architecture/
+//! [`application`]: application()
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/iced-rs/iced/9ab6923e943f784985e9ef9ca28b10278297225d/docs/logo.svg"
 )]

src/multi_window.rs

@@ -14,9 +14,7 @@ pub use crate::application::{Appearance, DefaultStyle};
 ///   document and display only the contents of the `window::Id::MAIN` window.
 ///
 /// An [`Application`] can execute asynchronous actions by returning a
-/// [`Command`] in some of its methods. If you do not intend to perform any
-/// background work in your program, the [`Sandbox`] trait offers a simplified
-/// interface.
+/// [`Command`] in some of its methods.
 ///
 /// When using an [`Application`] with the `debug` feature enabled, a debug view
 /// can be toggled by pressing `F12`.

src/program.rs

@@ -5,7 +5,7 @@
 //! or a specific type.
 //!
 //! This API is meant to be a more convenient—although less
-//! powerful—alternative to the [`Sandbox`] and [`Application`] traits.
+//! powerful—alternative to the [`Application`] traits.
 //!
 //! [`Sandbox`]: crate::Sandbox
 //!
@@ -748,8 +748,6 @@ fn with_style<P: Definition>(
 ///
 /// This trait is implemented both for `&static str` and
 /// any closure `Fn(&State) -> String`.
-///
-/// You can use any of these in [`Program::title`].
 pub trait Title<State> {
     /// Produces the title of the [`Program`].
     fn title(&self, state: &State) -> String;