Update doc/api/async_hooks.md

Co-authored-by: Rich Trott <[email protected]>

Author: GeoffreyBooth

doc/api/async_hooks.md

@@ -4,7 +4,7 @@
 
 > Stability: 1 - Experimental. We plan to remove this API
 > in the future; it will never become stable.
-> Please migrate to [`AsyncLocalStorage`][] and [Diagnostics Channel][] and
+> Please migrate to [`AsyncLocalStorage`][], [Diagnostics Channel][], and
 > other stable APIs.
 
 <!-- source_link=lib/async_hooks.js -->