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

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

Author: pre-commit-ci[bot]

Diff for: graphs/bidirectional_search.py

@@ -170,4 +170,4 @@ def main() -> None:
 
 
 if __name__ == "__main__":
-    main()
+    main()