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

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

Author: pre-commit-ci[bot]

mypy/types.py

@@ -2860,9 +2860,8 @@ def __eq__(self, other: object) -> bool:
         return self.item == other.item
 
     def is_singleton_type(self) -> bool:
-        return (
-            (isinstance(self.item, Instance) and self.item.type.is_final)
-            or isinstance(self.item, NoneType)
+        return (isinstance(self.item, Instance) and self.item.type.is_final) or isinstance(
+            self.item, NoneType
         )
 
     def serialize(self) -> JsonDict: