[docs] add link to vitest svelte example to test faq (#7281)

site/content/faq/800-how-do-i-test-svelte-apps.md

@@ -8,4 +8,5 @@ There are a few approaches that people take when testing, but it generally invol
 
 Some resources for getting started with unit testing:
 - [Svelte Testing Library](https://testing-library.com/docs/svelte-testing-library/example/)
+- [Example using vitest](https://github.com/vitest-dev/vitest/tree/main/examples/svelte)
 - [Example using uvu test runner with JSDOM](https://github.com/lukeed/uvu/tree/master/examples/svelte)