Fix linting

Author: cajchristian

tests/test_greedy_selector.py

@@ -51,10 +51,10 @@ def test_score_threshold_and_full(self):
 
     def test_bad_score_threshold_type(self):
         with self.assertRaises(ValueError) as cm:
-            _ = GreedyTester(score_threshold_type = "bad").fit(self.X)
+            _ = GreedyTester(score_threshold_type="bad").fit(self.X)
         self.assertEqual(
             str(cm.exception),
-            "invalid score_threshold_type, expected one of 'relative' or 'absolute'"
+            "invalid score_threshold_type, expected one of 'relative' or 'absolute'",
         )
 
     def test_bad_warm_start(self):