docs: updated the input events doc (testing-library#13)

* docs: updated the input events doc

Called out the user-event library in the input events documentation section

* fix: added link to user-event page

* tweak text

Author: weyert

docs/example-input-event.md

@@ -4,6 +4,10 @@ title: Input Event
 sidebar_label: Input Event
 ---
 
+> **Note**
+>
+> If you want to simulate a more natural typing behaviour while testing your component, consider the companion library [`user-event`](ecosystem-user-event.md)
+
 ```jsx
 import React from 'react'
 import { render, fireEvent, cleanup } from 'react-testing-library'