fix pytest linting

Author: saldanhad

pandas/tests/apply/test_frame_apply.py

@@ -742,7 +742,7 @@ def test_apply_category_equalness(val):
     result = df.a.apply(lambda x: x == val)
     expected = Series(
         [False if pd.isnull(x) else x == val for x in df_values], name="a"
-    ) # False since behavior of NaN for categorical dtype has been changed (GH 59966)
+    )  # False since behavior of NaN for categorical dtype has been changed (GH 59966)
     tm.assert_series_equal(result, expected)