Fix Rev2 class implementation for "Sum of Root To Leaf Binary Numbers" problem

Author: dkoval

src/main/java/com/github/dkoval/leetcode/challenge/SumOfRootToLeafBinaryNumbers.java

@@ -24,7 +24,7 @@ public interface SumOfRootToLeafBinaryNumbers {
 
     int sumRootToLeaf(TreeNode root);
 
-    class SumOfRootToLeafBinaryNumbersRev2 implements SumOfRootToLeafBinaryNumbersRev1 {
+    class SumOfRootToLeafBinaryNumbersRev2 implements SumOfRootToLeafBinaryNumbers {
 
         @Override
         public int sumRootToLeaf(TreeNode root) {