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

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

Author: pre-commit-ci[bot]

neural_network/artificial_neural_network.py

@@ -200,4 +200,4 @@ def predict(self, inputs: np.ndarray) -> np.ndarray:
 if __name__ == "__main__":
     import doctest
 
-    doctest.testmod()
+    doctest.testmod()