fix: typo

Author: kozistr

tests/test_optimizer_parameters.py

@@ -108,7 +108,7 @@ def test_beta0(optimizer_name):
         optimizer(None, num_iterations=200, beta0=-0.1)
 
 
-@pytest.mark.parametrize('optimizer_names', ['nero'])
+@pytest.mark.parametrize('optimizer_name', ['nero'])
 def test_beta(optimizer_name):
     optimizer = load_optimizer(optimizer_name)
     with pytest.raises(ValueError):