Update README.md

README.md

@@ -19,7 +19,7 @@ BigDL makes it easy for data scientists and data engineers to build end-to-end,
 
  * [PPML](#ppml-privacy-preserving-machine-learning): privacy preserving big data analysis and machine learning (*experimental*)
 
- * [Cluster Serving](https://bigdl.readthedocs.io/en/latest/doc/Serving/Overview/serving.html): Real-time, Distributed Model Serving
+ * [Cluster Serving](https://bigdl.readthedocs.io/en/latest/doc/Serving/Overview/serving.html): distributed, real-time model serving
 
 For more information, you may [read the docs](https://bigdl.readthedocs.io/).