Update api-events.mdx (#1225)

Author: Louis Moselhi

docs/dom-testing-library/api-events.mdx

@@ -97,7 +97,7 @@ fireEvent.keyDown(domNode, {key: 'A', code: 'KeyA'})
 ```
 
 You can find out which key code to use at
-[https://keycode.info/](https://keycode.info/).
+[https://www.toptal.com/developers/keycode](https://www.toptal.com/developers/keycode).
 
 ## `createEvent[eventName]`