Fix: add missing newline at end of file

Author: KwonNayeon

merge-two-sorted-lists/KwonNayeon.py

@@ -4,6 +4,8 @@
  2. -100 <= Node.val <= 100
  3. list1 and list2 are sorted in non-decreasing order
 
+<Solution 1>
+
 Time Complexity: n과 m이 각각 list1과 list2의 길이를 나타낼 때, O(n + m)
  - 각 노드를 한 번씩만 방문하기 때문
 
@@ -44,4 +46,11 @@ def mergeTwoLists(self, list1: Optional[ListNode], list2: Optional[ListNode]) ->
 
         return result.next
 
-# Solution 2
+"""
+<Solution 2>
+Time Complexity:
+
+Space Complexity:
+
+풀이 방법:
+"""