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

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

hoomd_organics/utils/utils.py

@@ -14,6 +14,7 @@ def check_return_iterable(obj):
     except:  # noqa: E722
         return [obj]
 
+
 def validate_ref_value(ref_value, dimension):
     """Validates the reference value and checks the unit dimension.
     This function validates the reference value. The reference value can be