fix zh output encoding

pred.py

@@ -55,7 +55,7 @@ if __name__ == '__main__':
         prompt_format = dataset2prompt[dataset]
         max_gen = dataset2maxlen[dataset]
         preds = get_pred(model, tokenizer, data, max_length, max_gen, prompt_format, dataset, device)
-        with open(f"pred/{dataset}.jsonl", "w") as f:
+        with open(f"pred/{dataset}.jsonl", "w", encoding="utf-8") as f:
             for pred in preds:
                 json.dump(pred, f, ensure_ascii=False)
                 f.write('\n')
\ No newline at end of file