fix lint error

Author: lpizzinidev

pandas/tests/series/methods/test_combine_first.py

@@ -104,10 +104,10 @@ def test_combine_first_dt_tz_values(self, tz_naive_fixture):
     def test_combine_first_timezone_series_with_empty_series(self):
         # GH 41800
         time_index = pd.date_range(
-            datetime(2021, 1, 1, 1), 
-            datetime(2021, 1, 1, 10), 
-            freq='H', 
-            tz='Europe/Rome'
+            datetime(2021, 1, 1, 1),
+            datetime(2021, 1, 1, 10),
+            freq="H",
+            tz="Europe/Rome"
         )
         s1 = Series(np.random.random(10), index=time_index)
         s2 = Series()