fix(mge/functional): fix one_hot irregular coding style

imperative/python/megengine/functional/nn.py

@@ -1587,8 +1587,8 @@ def one_hot(inp: Tensor, num_classes: int) -> Tensor:
              [0 0 1 0]
              [0 0 0 1]]
     """
-    zeros_tensor = zeros(list(inp.shape) + [num_classes], inp.dtype, inp.device)
-    ones_tensor = ones(list(inp.shape) + [1], inp.dtype, inp.device)
+    zeros_tensor = zeros(list(inp.shape) + [num_classes], dtype=inp.dtype, device=inp.device)
+    ones_tensor = ones(list(inp.shape) + [1], dtype=inp.dtype, device=inp.device)
 
     op = builtin.IndexingSetOneHot(axis=inp.ndim)
     (result,) = apply(op, zeros_tensor, inp, ones_tensor)