fix(sprint-2): move return statement after calculation in sum function

Author: Tarawally

Sprint-2/2-mandatory-debug/1.js

@@ -1,5 +1,7 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// Output: "The sum of 10 and 32 is undefined"
+// Return statement has no value, so returns undefined. Expression "a + b" is unreachable code
 
 function sum(a, b) {
   return;
@@ -9,5 +11,11 @@ function sum(a, b) {
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+// Bug: return; exits immediately without a value (returns undefined). Code after return never executes
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/return
+
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+function sum(a, b) {
+  return a + b;
+}