Snippet format update

To match the starter (for the migration)

snippets/delay.md

@@ -1,4 +1,7 @@
-### delay
+---
+title: delay
+tags: function,intermediate
+---
 
 Invokes the provided function after `wait` milliseconds.
 
@@ -17,4 +20,4 @@ delay(
   1000,
   'later'
 ); // Logs 'later' after one second.
-```
+```