update readme

Author: hogan-tech

.github/Question List.txt

@@ -11,4 +11,5 @@
 0446-arithmetic-slices-ii-subsequence python hard
 0938-range-sum-of-bst python easy
 1428-leftmost-column-with-at-least-a-one python medium
-0872-leaf-similar-trees python easy
+0872-leaf-similar-trees python easy
+2385-amount-of-time-for-binary-tree-to-be-infected python medium