move log from 2.x to 3.0 on changelog

Signed-off-by: channel-dante <dante@channel.io>

CHANGELOG.md

@@ -20,6 +20,7 @@ This section is for maintaining a changelog for all breaking changes for the cli
 
 ### Changed
 - Migrate client transports to Apache HttpClient / Core 5.x ([#246](https://github.com/opensearch-project/opensearch-java/pull/246))
+- Changed SearchAfter of SearchRequest type to FieldValue instead of String ([#769](https://github.com/opensearch-project/opensearch-java/pull/769))
 
 ### Deprecated
 - Deprecate RestClientTransport ([#536](https://github.com/opensearch-project/opensearch-java/pull/536))
@@ -42,7 +43,6 @@ This section is for maintaining a changelog for all breaking changes for the cli
 ### Dependencies
 
 ### Changed
-- Changed SearchAfter of SearchRequest type to FieldValue instead of String
 
 ### Deprecated
 - Deprecated "_toQuery()" in Query and QueryVariant ([#760](https://github.com/opensearch-project/opensearch-java/pull/760)