Update lowest_common_ancestor.py

Author: MaximSmolskiy

data_structures/binary_tree/lowest_common_ancestor.py

@@ -105,7 +105,7 @@ def breadth_first_search(
     >>> level = [-1] * 7
     >>> parent = [[0] * 7 for _ in range(20)]
     >>> graph = {1: [2, 3], 2: [4, 5], 3: [6], 4: [], 5: [], 6: []}
-    >>> level, parent = breadth_first_search(level, parent, 6, graph, 1)
+    >>> level, parent = breadth_first_search(level=level, parent=parent, max_node=6, graph=graph, root=1)
     >>> level
     [-1, 0, 1, 1, 2, 2, 2]
     >>> parent[0]