Fix missing newline at end of juhui-jeong.java

Add missing newline at the end of the file.

Author: juhui-jeong

same-tree/juhui-jeong.java

@@ -9,4 +9,4 @@ public boolean isSameTree(TreeNode p, TreeNode q) {
         if (p.val != q.val) return false;
         return isSameTree(p.left, q.left) && isSameTree(p.right, q.right);
     }
-}
+}