[NFC] polish colossalai/fx/profiler/experimental/profiler_module/embedding.py code style (#3256)

Co-authored-by: Minghao Huang <huangminghao@luchentech.com>

colossalai/fx/profiler/experimental/profiler_module/embedding.py

 from typing import Tuple
+
 import torch
+
 from ..registry import meta_profiler_module
 
 
@@ -8,4 +10,4 @@ def torch_nn_embedding(self: torch.nn.Embedding, input: torch.Tensor) -> Tuple[i
     # nn.Embedding is a dictionary lookup, so technically it has 0 FLOPs. (https://discuss.pytorch.org/t/correct-way-to-calculate-flops-in-model/67198/6)
     flops = 0
     macs = 0
-    return flops, macs
\ No newline at end of file
+    return flops, macs