Update operations_on_datastructures/reverse_binary_tree.cpp

Co-authored-by: David Leal <[email protected]>

operations_on_datastructures/reverse_binary_tree.cpp

@@ -1,6 +1,6 @@
 /**
  * @file
- * @brief An implemention for [Reversing a Binary
+ * @brief Implementation for the [Reversing a Binary
  * Tree](https://www.geeksforgeeks.org/reverse-tree-path/) recursively.
  * @details A binary tree can be reversed by swapping the left and
  * right child of a node at each node, starting from the root, and