fix: correct broken WAI-ARIA modal dialog link in createPortal reference (#7833)

* fix link from ARIA dialog-modal

* chore: trigger CLA recheck

Author: dimatitov

src/content/reference/react-dom/createPortal.md

@@ -240,7 +240,7 @@ export default function ModalContent({ onClose }) {
 
 It's important to make sure that your app is accessible when using portals. For instance, you may need to manage keyboard focus so that the user can move the focus in and out of the portal in a natural way.
 
-Follow the [WAI-ARIA Modal Authoring Practices](https://www.w3.org/WAI/ARIA/apg/#dialog_modal) when creating modals. If you use a community package, ensure that it is accessible and follows these guidelines.
+Follow the [WAI-ARIA Modal Authoring Practices](https://www.w3.org/WAI/ARIA/apg/patterns/dialog-modal) when creating modals. If you use a community package, ensure that it is accessible and follows these guidelines.
 
 </Pitfall>