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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

searches/astar.py

@@ -132,6 +132,7 @@ def neighbors(node: Node) -> Iterable[tuple[Node, float]]:
 if __name__ == "__main__":
     # Example usage / manual test
     import doctest
+
     doctest.testmod()
     start: Node = (0, 0)
     goal: Node = (5, 5)