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

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

mbuild/tests/test_coordinate_transform.py

@@ -457,7 +457,7 @@ def test_bondgraph(self, ch3):
         for edge0, edge1 in bgraph.edges():
             assert bgraph.has_edge(edge0, edge1)
             assert bgraph.has_edge(edge1, edge0)
-        neighbors = {"C":4, "H":1}
+        neighbors = {"C": 4, "H": 1}
         for node in bgraph.nodes():
             x = map(lambda node: node.name, bgraph._adj[node])
             assert neighbors[node.name] == len(list(x))