fix broken links

Author: titoBouzout

src/routes/guides/routing-and-navigation.mdx

@@ -504,7 +504,7 @@ render(
 ```
 
 `[id].jsx` contains the component that gets rendered.
-When you wrap the function within [`createAsync`](/solid-router/reference/data-apis/create-async) with the imported function, it will yield [a signal](/routes/concepts/signals) once the anticipated promise resolves.
+When you wrap the function within [`createAsync`](/solid-router/reference/data-apis/create-async) with the imported function, it will yield [a signal](/concepts/signals) once the anticipated promise resolves.
 
 ```jsx
 // [id].jsx