fix: update `LayerNorm` docstring

modeling_stablelm_alpha.py

@@ -51,7 +51,7 @@ def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int]
 class LayerNorm(nn.LayerNorm):
     def __init__(self, normalized_shape: torch.Size, bias: bool = True, **kwargs):
         r"""
-        use_cache (`bool`, default = True): whether to use the bias term.
+        bias (`bool`, default = True): whether to use the bias term.
         """
         super().__init__(normalized_shape, **kwargs)
         if not bias: