Fix formatting

src/algorithms.rs

@@ -35,7 +35,10 @@ where
     let distances = dijkstra_impl(graph, source, |neighbor, predecessor| {
         predecessors[neighbor.into()] = Some(predecessor);
     });
-    DijkstraResult { distances, predecessors }
+    DijkstraResult {
+        distances,
+        predecessors,
+    }
 }
 
 pub fn dijkstra_distances<G>(graph: &G, source: G::Vertex) -> Vec<Option<u32>>