making error handling clearer

Author: Poonam-raj

Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -46,7 +46,9 @@ try {
   getCardValue("invalid");
 
   // This line will not be reached if an error is thrown as expected
-  console.error("Error was not thrown for invalid card");
-} catch (e) {}
+  console.error("Error was not thrown for invalid card 😢");
+} catch (e) {
+  console.log("Error thrown for invalid card!");
+}
 
 // What other invalid card cases can you think of?