Update README.md

TensorFlow2x/Accuracy_Validation/ResNet50_Official/README.md

@@ -23,8 +23,9 @@
 ## 运行
     export PYTHONPATH=/path/to/tensorflow/model:$PYTHONPATH
     mpirun -np $np --hostfile hostfile --bind-to none scripts-run/single_process.sh
+## 测试说明
 
-    多卡测试时需要修改部分代码，具体可参考https://tensorflow.google.cn/guide/migrate/multi_worker_cpu_gpu_training?hl=en
+多卡测试时需要修改部分代码，具体可参考https://tensorflow.google.cn/guide/migrate/multi_worker_cpu_gpu_training?hl=en
 
 # 参考
 [https://github.com/tensorflow/models/tree/v2.7.0](https://github.com/tensorflow/models/tree/v2.7.0/official/vision/image_classification/resnet)