fix release notes (#624)

Author: chenziliang

docs/release-notes.md

@@ -1,6 +1,7 @@
 # Release
 
 Release by version:
+- [Timeplus Enterprise 3.2](/enterprise-v3.2)
 - [Timeplus Enterprise 3.1](/enterprise-v3.1)
 - [Timeplus Enterprise 3.0](/enterprise-v3.0)
 - [Timeplus Enterprise 2.8](/enterprise-v2.8)