fix print len eval

run_speech_recognition_ctc.py

@@ -815,8 +815,8 @@ def main():
         # we do not want to group tokens when computing the metrics
         label_str = tokenizer.batch_decode(pred.label_ids, group_tokens=False)
 
-        print(pred_str)
-        print(label_str)
+        print(pred_str[:10])
+        print(label_str[:10])
 
         metrics = {k: v.compute(predictions=pred_str, references=label_str) for k, v in eval_metrics.items()}