Update code with String(Number())

Author: russom

Sprint-2/2-mandatory-errors/3.js

@@ -1,5 +1,5 @@
 const cardNumber = "4533787178994213";
-const last4Digits = cardNumber.slice(-4);
+const last4Digits = String(Number(cardNumber.slice(-4)));
 
 console.log(last4Digits);