Fix typo: pas_token_id (#30894)

Fix typo

src/transformers/generation/configuration_utils.py

@@ -518,7 +518,7 @@ class GenerationConfig(PushToHubMixin):
         if self.pad_token_id is not None and self.pad_token_id < 0:
             warnings.warn(
                 f"`pad_token_id` should be positive but got {self.pad_token_id}. This will cause errors when batch generating, if there is padding. "
-                "Please set `pas_token_id` explicitly by `model.generation_config.pad_token_id=PAD_TOKEN_ID` to avoid errors in generation, and ensure your `input_ids` input does not have negative values."
+                "Please set `pad_token_id` explicitly by `model.generation_config.pad_token_id=PAD_TOKEN_ID` to avoid errors in generation, and ensure your `input_ids` input does not have negative values."
             )
 
         # Validation of attribute relations: