update release notes

RELEASE-NOTES.md

@@ -2,7 +2,8 @@
 
 ### API Changes
 
-1. Optimize and delete API and configuration item of sharding logicIndex.
+1. Optimize and delete API and configuration item of sharding logic index.
+1. Update the API of encryption to support the encrypted and plain data coexistence.
 
 ### New Features
 

RELEASE-NOTES_ZH.md

@@ -2,7 +2,8 @@
 
 ### API调整
 
-1. 优化并删除sharding logicIndex的API和配置项。
+1. 优化并删除分片逻辑索引的API和配置项。
+1. 升级脱敏API，支持明密文数据共存。
 
 ### 新功能