docs: move documentation about order

actix-web/src/app.rs

@@ -323,16 +323,7 @@ where
     /// Middleware can be applied similarly to individual `Scope`s and `Resource`s.
     /// See [`Scope::wrap`](crate::Scope::wrap) and [`Resource::wrap`].
     ///
-    /// # Middleware Order
-    /// Notice that the keyword for registering middleware is `wrap`. As you register middleware
-    /// using `wrap` in the App builder, imagine wrapping layers around an inner App. The first
-    /// middleware layer exposed to a Request is the outermost layer (i.e., the *last* registered in
-    /// the builder chain). Consequently, the *first* middleware registered in the builder chain is
-    /// the *last* to start executing during request processing.
-    ///
-    /// Ordering is less obvious when wrapped services also have middleware applied. In this case,
-    /// middlewares are run in reverse order for `App` _and then_ in reverse order for the
-    /// wrapped service.
+    /// For more info on middleware take a look at the [`middleware` module][crate::middleware].
     ///
     /// # Examples
     /// ```