chore: fix route matching priority example

[ihor-av]

The current "Route matching priority" example is a bit confusing because the inline comments contradict the preceding explanation

The documentation states that:

1. Static routes are always checked first.
2. Dynamic routes are checked in registration order.

However, the example comments imply that /posts/featured is matched first because it was registered first, rather than because it is a static route.

This PR updates the example to:

• demonstrate that registration order only affects dynamic routes;
• clarify that static routes always take precedence regardless of registration order.