fix black

Author: topper-123

pandas/core/frame.py

@@ -10390,8 +10390,10 @@ def _series_round(ser: Series, decimals: int) -> Series:
             # Argument 2 to "_series_round" has incompatible type
             # "Union[int, integer[Any]]"; expected "int"
             return self._constructor(
-                self._mgr.round(decimals=decimals,  # type: ignore[arg-type]
-                using_cow=using_copy_on_write()),
+                self._mgr.round(
+                    decimals=decimals,  # type: ignore[arg-type]
+                    using_cow=using_copy_on_write(),
+                ),
             ).__finalize__(self, method="round")
         else:
             raise TypeError("decimals must be an integer, a dict-like or a Series")