Correct verified route paths in routing guide (phoenixframework#5468)

guides/routing.md

@@ -236,14 +236,14 @@ When building paths for nested routes, we will need to interpolate the IDs where
 ```elixir
 user_id = 42
 post_id = 17
-~p"/users/#{user_id}/#{post_id}"
+~p"/users/#{user_id}/posts/#{post_id}"
 "/users/42/posts/17"
 ```
 
 Verified routes also support the `Phoenix.Param` protocol, but we don't need to concern ourselves with elixir protocols just yet. Just know that once we start building our application with structs like `%User{}` and `%Post{}`, we'll be able to interpolate those data structures directly into our `~p` paths and phoenix will pluck out the correct fields to use in the route.
 
 ```elixir
-~p"/users/#{user}/#{post}"
+~p"/users/#{user}/posts/#{post}"
 "/users/42/posts/17"
 ```