Fix incorrect argument in merge_two_sorted_lists test case

Updated the test case to correctly pass two sorted lists as arguments to the merge_two_lists function. This ensures the test properly reflects the intended functionality of merging two sorted linked lists.

Author: nicholasadamou

Linked Lists/merge_two_sorted_lists.py

@@ -38,7 +38,7 @@ def test_mergeTwoLists(self):
         list1 = ListNode(1, ListNode(2, ListNode(4)))
         list2 = ListNode(1, ListNode(3, ListNode(4)))
 
-        result = merge_two_lists(None, list1, list2)
+        result = merge_two_lists(list1, list2)
 
         self.assertEqual(result.val, 1)
         self.assertEqual(result.next.val, 1)