Fixing linting issues

Author: marcromeyn

merlin/models/torch/__init__.py

@@ -16,10 +16,10 @@
 
 from merlin.models.torch.batch import Batch, Sequence
 from merlin.models.torch.block import Block, ParallelBlock
-from merlin.models.torch.transforms.agg import Concat, Stack
 from merlin.models.torch.outputs.base import ModelOutput
 from merlin.models.torch.outputs.classification import BinaryOutput
 from merlin.models.torch.outputs.regression import RegressionOutput
+from merlin.models.torch.transforms.agg import Concat, Stack
 
 __all__ = [
     "Batch",
@@ -30,5 +30,5 @@
     "ParallelBlock",
     "RegressionOutput",
     "Sequence",
-    "Stack"
+    "Stack",
 ]