[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

@@ -120,8 +120,8 @@ def main():
         print(f"θ{i}: {value:.5f}")
 
 
-
 if __name__ == "__main__":
     import doctest
+
     doctest.testmod()
     main()