Fix linting.

src/holt59/aoc/2015/day9.py

@@ -10,7 +10,8 @@ lines = sys.stdin.read().splitlines()
 distances: dict[str, dict[str, int]] = defaultdict(dict)
 for line in lines:
     origin, destination, length = cast(
-        tuple[str, str, int], parse.parse("{} to {} = {:d}", line)  # type: ignore
+        tuple[str, str, int],
+        parse.parse("{} to {} = {:d}", line),  # type: ignore
     )
     distances[origin][destination] = distances[destination][origin] = length