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

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

Author: pre-commit-ci[bot]

machine_learning/ridge_regression.py

@@ -66,7 +66,9 @@ def _add_intercept(features: np.ndarray) -> np.ndarray:
         n_samples = features.shape[0]
         return np.c_[np.ones(n_samples), features]
 
-    def fit(self, features: np.ndarray, target: np.ndarray, add_intercept: bool = True) -> None:
+    def fit(
+        self, features: np.ndarray, target: np.ndarray, add_intercept: bool = True
+    ) -> None:
         """Train the ridge regression model.
 
         Parameters