Update README.md

examples/C++/PaddleClas/pp_shitu/README.md

@@ -7,8 +7,10 @@ tar -xzvf pp_shitu.tar.gz
 ```
 
 ## Get test images and index
+```
 wget https://paddle-imagenet-models-name.bj.bcebos.com/dygraph/rec/data/drink_dataset_v1.0.tar
 tar -xvf drink_dataset_v1.0.tar
+```
 
 ## RPC Service
 ### Start Service
@@ -19,4 +21,4 @@ sh run_cpp_serving.sh
 ### Client Prediction
 ```
 python3 test_cpp_serving_pipeline.py ./drint_dataset_v1.0/test_images/nongfu_spring.jpeg
-```
+```
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