Add await

Even though it technically works without, let’s be clear that syscalls are always async.

hello.ts

@@ -8,5 +8,5 @@ const loneRangerQuotes = [
 ];
 
 export async function helloWorld() {
-  flashNotification(loneRangerQuotes[Math.floor(Math.random() * loneRangerQuotes.length)]);
-}
+  await flashNotification(loneRangerQuotes[Math.floor(Math.random() * loneRangerQuotes.length)]);
+}