fix(quiz1): add fourth assert

Author: shadows-withal

exercises/quiz1.rs

@@ -20,9 +20,11 @@
 fn verify_test() {
     let price1 = calculate_price_of_apples(35);
     let price2 = calculate_price_of_apples(40);
-    let price3 = calculate_price_of_apples(65);
+    let price3 = calculate_price_of_apples(41);
+    let price4 = calculate_price_of_apples(65);
 
     assert_eq!(70, price1);
     assert_eq!(80, price2);
-    assert_eq!(65, price3);
+    assert_eq!(41, price3);
+    assert_eq!(65, price4);
 }