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

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

Author: pre-commit-ci[bot]

Diff for: machine_learning/dimensionality_reduction.py

@@ -183,7 +183,9 @@ def test_linear_discriminant_analysis() -> None:
     with pytest.raises(AssertionError) as error_info:
         projected_data = linear_discriminant_analysis(features, labels, classes, 3)
         if isinstance(projected_data, np.ndarray):
-            raise AssertionError("Did not raise AssertionError for dimensions > classes")
+            raise AssertionError(
+                "Did not raise AssertionError for dimensions > classes"
+            )
         assert error_info.type is AssertionError