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

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

Author: pre-commit-ci[bot]

graphs/breadth_first_search_shortest_path.py

@@ -73,7 +73,9 @@ def shortest_path(self, target_vertex: str) -> str:
 
         target_vertex_parent = self.parent.get(target_vertex)
         if target_vertex_parent is None:
-            raise ValueError(f"No path from vertex: {self.source_vertex} to vertex: {target_vertex}")
+            raise ValueError(
+                f"No path from vertex: {self.source_vertex} to vertex: {target_vertex}"
+            )
 
         return self.shortest_path(target_vertex_parent) + f"->{target_vertex}"