[9.x] to_route helper in routing (laravel#8136)

* Update routing.md

* Update routing.md

Co-authored-by: Taylor Otwell <[email protected]>

Author: medilies

routing.md

@@ -305,6 +305,8 @@ Once you have assigned a name to a given route, you may use the route's name whe
     // Generating Redirects...
     return redirect()->route('profile');
 
+    return to_route('profile');
+
 If the named route defines parameters, you may pass the parameters as the second argument to the `route` function. The given parameters will automatically be inserted into the generated URL in their correct positions:
 
     Route::get('/user/{id}/profile', function ($id) {