[pre-commit.ci] auto fixes from pre-commit.com hooks

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Author: pre-commit-ci[bot]

project_euler/problem_015/sol2.py

@@ -6,6 +6,7 @@
 How many such routes are there through a 20x20 grid?
 """
 
+
 def solution(n: int = 20) -> int:
     """
     Solve by explicitly counting the paths with dynamic programming.