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

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

Author: pre-commit-ci[bot]

graphs/graphs_floyd_warshall.py

@@ -100,11 +100,13 @@ def floyd_warshall(graph: list[list[float]], vertex: int) -> tuple:
                 ):
                     dist[i][j] = dist[i][k] + dist[k][j]
     return dist, vertex
-    
+
+
 if __name__ == "__main__":
     import doctest
+
     doctest.testmod()
-    
+
     v = int(input("Enter number of vertices: "))
     e = int(input("Enter number of edges: "))