chore: update FAQ redirect (#7892)

Fixes videojs/videojs.com#159

Author: gkatsev

docs/_redirects

@@ -5,7 +5,7 @@
 /tutorial-debugging.html          https://videojs.com/guides/debugging          301!
 /tutorial-embeds.html             https://videojs.com/guides/embeds             301!
 /tutorial-event-target.html       https://videojs.com/guides/event-target       301!
-/tutorial-faq.html                https://videojs.com/guides/faq                301!
+/tutorial-faq.html                https://videojs.com/guides/faqs               301!
 /tutorial-hooks.html              https://videojs.com/guides/hooks              301!
 /tutorial-languages.html          https://videojs.com/guides/languages          301!
 /tutorial-layout.html             https://videojs.com/guides/layout             301!