style: updated styles across macro implementation

src/graph/types.rs

@@ -591,7 +591,9 @@ nodes:
     #[test]
     fn graph_silently_ignores_enabled_macros_key() {
         let yaml = "name: g\nenabled_macros: [\"x\"]\nstart: x\nnodes:\n  x:\n    id: x\n    type: end\n    output: ok\n";
+
         let graph: Graph = serde_yaml::from_str(yaml).unwrap();
+
         assert_eq!(graph.name, "g");
         assert_eq!(graph.start, "x");
     }