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

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

glotaran/model/model.py

@@ -200,7 +200,7 @@ def _add_dataset_type(self):
         self._add_model_item("dataset", dataset_model_type)
 
     def as_dict(self) -> dict:
-        model_dict = {'default-megacomplex': self.default_megacomplex}
+        model_dict = {"default-megacomplex": self.default_megacomplex}
         for name in self._model_items:
             items = getattr(self, name)
             if len(items) == 0: