Merge pull request #37 from lonelydev/leetcode/linkedlist/sumtwonumbers

Update README

Author: lonelydev

SumTwoNumbers/README.md

@@ -6,7 +6,7 @@ You may assume the two numbers do not contain any leading zero, except the numbe
 
 Example:
 
-Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)
-Output: 7 -> 0 -> 8
-Explanation: 342 + 465 = 807.
+    Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)
+    Output: 7 -> 0 -> 8
+    Explanation: 342 + 465 = 807.