Update CHANGELOG.md

Author: ljiang1

CHANGELOG.md

@@ -1,15 +1,13 @@
 # Splunk Cloud SDK for Python Changelog
 
 ## Version 12.0.0-beta4
-#### Breaking Changes
-KVstore service (v1beta1): `delete_recoreds()` and `query_records()` have added a new input parameter of `enable_mvl`
+#### Non-Breaking Changes
+KVstore service (v1beta1): `delete_recoreds()` has  added a new optional input parameter of `enable_mvl`;  `query_records()` has  added  new optional input parameters of `enable_mvl` and `shared`
 
 Search service (v3alpha1): new api of `list_datasets()` is added
 
-Streams service (v3beta1): `list_pipelines()` has added a new input parameter of `include_status`
+Streams service (v3beta1): `list_pipelines()` has added a new optional input parameter of `include_status`
 
-
-#### Non-Breaking Changes
 Streams service (v3beta1): new api of `delete_source()` is added
 
 #### Bug fixed