add change log

Signed-off-by: zane-neo <zaniu@amazon.com>

Author: zane-neo

CHANGELOG.md

@@ -25,6 +25,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Support empty string for fields in text embedding processor ([#1041](https://github.com/opensearch-project/neural-search/pull/1041))
 - Optimize ML inference connection retry logic ([#1054](https://github.com/opensearch-project/neural-search/pull/1054))
 - Support for builder constructor in Neural Query Builder ([#1047](https://github.com/opensearch-project/neural-search/pull/1047))
+- Support different embedding types in model's response ([#1007](https://github.com/opensearch-project/neural-search/pull/1007))
 ### Bug Fixes
 - Address inconsistent scoring in hybrid query results ([#998](https://github.com/opensearch-project/neural-search/pull/998))
 - Fix bug where ingested document has list of nested objects ([#1040](https://github.com/opensearch-project/neural-search/pull/1040))