fix: corrected misleading log message in save_pretrained function (#28699)

src/transformers/modeling_utils.py

@@ -2495,8 +2495,7 @@ class PreTrainedModel(nn.Module, ModuleUtilsMixin, GenerationMixin, PushToHubMix
                 save_function(shard, os.path.join(save_directory, shard_file))
 
         if index is None:
-            weights_file_name = SAFE_WEIGHTS_NAME if safe_serialization else WEIGHTS_NAME
-            path_to_weights = os.path.join(save_directory, _add_variant(weights_file_name, variant))
+            path_to_weights = os.path.join(save_directory, weights_name)
             logger.info(f"Model weights saved in {path_to_weights}")
         else:
             save_index_file = SAFE_WEIGHTS_INDEX_NAME if safe_serialization else WEIGHTS_INDEX_NAME