Update link in FAQ

Wiki has been replaced by website.

README.md

@@ -63,7 +63,7 @@ Catalogue requests should be created at https://github.com/inorichi/tachiyomi-ex
 
 ## FAQ
 
-[See our wiki.](https://github.com/inorichi/tachiyomi/wiki/FAQ)
+[See our website.](https://tachiyomi.org/)
 You can also reach out to us on [Discord](https://discord.gg/tachiyomi).
 
 ## License