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

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

nemo/core/optim/distributed_adam.py

@@ -121,6 +121,7 @@ def __init__(self, params, disable_distributed_parameters=False, **kwargs):
 
     def _fp32_register_post_backward_hooks(self):
         """Attach hooks for FP32 gradients"""
+
         def make_post_backward_hook(param):
             def post_backward_hook(*unused):
                 self._fp32_optim_grad_sync_needed = True
@@ -129,6 +130,7 @@ def post_backward_hook(*unused):
                         if param.grad is not None:
                             param.main_grad += param.grad.detach()
                         param.grad = None
+
         self._fp32_grad_accs = []
         for param in self._fp32_optim_main_params.keys():
             param_tmp = param.expand_as(param)