React Router: Clarify how to navigate to child routes of /profile (#2…

…9038)

Previously only implied you have to navigate manually via URL. Some expected links to be added to the page.

react/the_react_ecosystem/react_router.md

@@ -233,7 +233,7 @@ const Profile = () => {
 export default Profile;
 ```
 
-Check out the `/profile`, `/profile/popeye` and `/profile/spinach` pages. The `<Outlet />` component gets replaced with the children component when their paths are visited.
+Check out the `/profile` page. To visit `/profile/popeye` or `/profile/spinach` pages, manually add `/popeye` or `/spinach` to the end of the current URL. The `<Outlet />` component gets replaced with the children component when their paths are visited.
 
 If you want to render something as a default component when no path is added to Profile, you can add an index route to the children!