docs: fix hyperlink in user-event intro.mdx (#1097)

Fix hyperlink markup.

Author: caffeine-storm

docs/user-event/intro.mdx

@@ -80,7 +80,7 @@ test('render with a setup function', async () => {
 ```
 
 Note that, while directly invoking APIs such as `userEvent.click()` (which will
-trigger `setup` internally) is (still supported in
-v14)[https://testing-library.com/docs/user-event/setup#direct-apis], this option
+trigger `setup` internally) is [still supported in
+v14](https://testing-library.com/docs/user-event/setup#direct-apis), this option
 exists to ease the migration from v13 to v14, and for simple tests. We recommend
 using the methods on the instances returned by `userEvent.setup()`.