fix typo

deepmd/pt/loss/tensor.py

@@ -83,7 +83,7 @@ def forward(self, model_pred, label, natoms, learning_rate=0.0, mae=False):
             Other losses for display.
         """
         del learning_rate, mae
-        loss = torch.tensor.zeros(
+        loss = torch.zeros(
             1, dtype=env.GLOBAL_PT_FLOAT_PRECISION, device=env.DEVICE
         )[0]
         more_loss = {}