Add entry to changelog

Signed-off-by: Vijayan Balasubramanian <[email protected]>

CHANGELOG.md

@@ -21,6 +21,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 * Add support for byte vector with Faiss Engine HNSW algorithm [#1823](https://github.com/opensearch-project/k-NN/pull/1823)
 ### Enhancements
 * Adds iterative graph build capability into a faiss index to improve the memory footprint during indexing and Integrates KNNVectorsFormat for native engines[#1950](https://github.com/opensearch-project/k-NN/pull/1950)
+* Introduce new setting to configure whether to build graph or not during segment creation [#2007](https://github.com/opensearch-project/k-NN/pull/2007)
 ### Bug Fixes
 * Corrected search logic for scenario with non-existent fields in filter [#1874](https://github.com/opensearch-project/k-NN/pull/1874)
 * Add script_fields context to KNNAllowlist [#1917] (https://github.com/opensearch-project/k-NN/pull/1917)