[Permisson] Style fix (#26228)

fix copies

src/transformers/models/persimmon/modeling_persimmon.py

@@ -72,7 +72,7 @@ def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int]
 
 
 # Copied from transformers.models.llama.modeling_llama.LlamaRotaryEmbedding with Llama->Persimmon
-class PersimmonRotaryEmbedding(torch.nn.Module):
+class PersimmonRotaryEmbedding(nn.Module):
     def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None):
         super().__init__()