docs: update changelog for ab cloud 3.38

Author: dhanarab

CHANGELOG.md

@@ -1,18 +1,21 @@
 <a name="v0.26.0"></a>
-## [v0.26.0] - 2022-12-19
+## [v0.26.0] - 2022-12-20
 ### Chore
 - bump to version 0.26 for ab cloud 3.38
 - code formatting
 - **sdk:** regenerate sdk, cli sample app, cli test, doc index for ab cloud 3.38
 - **spec:** update spec for ab cloud 3.38
 
 ### Docs
-- migration guide 0.26
 - update changelog for ab cloud 3.38
+- update changelog for ab cloud 3.38
+- migration guide 0.26
 - update common use cases
+- **common use case:** update related to update achievement
 - **readme:** add jdk and gradle info
 
 ### Test
+- **integration:** achievement - update achievement now requires name and desc
 - **integration:** iam - add create user v3