Update stock_span_problem.py

Author: MaximSmolskiy

data_structures/stacks/stock_span_problem.py

@@ -26,7 +26,7 @@ def calculate_span(price: list[int]) -> list[int]:
     [1, 2, 3, 4, 5]
     >>> calculate_span([10, 20, 30, 40, 50])
     [1, 2, 3, 4, 5]
-    >>> calculation_span([100, 80, 60, 70, 60, 75, 85])
+    >>> calculate_span([100, 80, 60, 70, 60, 75, 85])
     [1, 1, 1, 2, 1, 4, 6]
     """
     n = len(price)