Fix doc links (#202)

* fix typo

* fix: Fix link path

* refactor: Change path specification method

src/app.rs

@@ -12,7 +12,7 @@ use crate::{
 ///
 /// Apps are built up as a combination of *state*, *endpoints* and *middleware*:
 ///
-/// - Application state is user-defined, and is provided via the [`App:new`]
+/// - Application state is user-defined, and is provided via the [`App::new`]
 /// function. The state is available as a shared reference to all app endpoints.
 ///
 /// - Endpoints provide the actual application-level code corresponding to

src/route.rs

@@ -6,6 +6,8 @@ use crate::{router::Router, Endpoint};
 /// [`Route::at`]) to establish a route, the `Route` type can be used to
 /// establish endpoints for various HTTP methods at that path. Also, using
 /// `nest`, it can be used to set up a subrouter.
+///
+/// [`App::at`]: ./struct.App.html#method.at
 pub struct Route<'a, State> {
     router: &'a mut Router<State>,
     path: String,