Fix typo in ops.py (Comfy-Org#11925)

Author: NAM-MAN

comfy/ops.py

@@ -260,7 +260,7 @@ def to_dequant(tensor, dtype):
 
 
 def cast_bias_weight(s, input=None, dtype=None, device=None, bias_dtype=None, offloadable=False, compute_dtype=None, want_requant=False):
-    # NOTE: offloadable=False is a a legacy and if you are a custom node author reading this please pass
+    # NOTE: offloadable=False is a legacy mode and if you are a custom node author reading this please pass
     # offloadable=True and call uncast_bias_weight() after your last usage of the weight/bias. This
     # will add async-offload support to your cast and improve performance.
     if input is not None: