update: test_sparse_supported

Author: kozistr

tests/test_gradients.py

@@ -60,7 +60,7 @@ def test_sparse_supported(sparse_optimizer):
     optimizer.step()
 
     if sparse_optimizer == 'madgrad':
-        optimizer = opt([param], weight_decay=1e-3, decouple_decay=True)
+        optimizer = opt([param], weight_decay=1e-3, decouple_decay=False)
         optimizer.reset()
         optimizer.zero_grad()