typo

torch_cluster/__init__.py

@@ -20,7 +20,7 @@ for library in [
         raise ImportError(f"Could not find module '{library}_cpu' in "
                           f"{osp.dirname(__file__)}")
 
-cuda_version = torch.ops.torch_sparse.cuda_version()
+cuda_version = torch.ops.torch_cluster.cuda_version()
 if torch.cuda.is_available() and cuda_version != -1:  # pragma: no cover
     if cuda_version < 10000:
         major, minor = int(str(cuda_version)[0]), int(str(cuda_version)[2])