Update changelog

Signed-off-by: Emmanuel Lodovice <[email protected]>

Author: emanlodovice

CHANGELOG.md

@@ -16,6 +16,7 @@
 * [CHANGE] Compactor: Don't halt compactor when overlapped source blocks detected. #5854
 * [CHANGE] S3 Bucket Client: Expose `-blocks-storage.s3.send-content-md5` flag and set default checksum algorithm to MD5. #5870
 * [CHANGE] Querier: Mark `querier.iterators` and `querier.batch-iterators` flags as deprecated. Now querier always use batch iterators. #5868
+* [CHANGE] Ruler: Remove `experimental.ruler.api-enable-rules-backup` flag and use `ruler.ring.replication-factor` to check if rules backup is enabled
 * [FEATURE] OTLP ingestion experimental. #5813
 * [FEATURE] Ingester: Add per-tenant new metric `cortex_ingester_tsdb_data_replay_duration_seconds`. #5477
 * [FEATURE] Query Frontend/Scheduler: Add query priority support. #5605