update changelog

Signed-off-by: Ben Ye <[email protected]>

CHANGELOG.md

@@ -12,6 +12,8 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 
 ### Fixed
 
+- [#5230](https://github.com/thanos-io/thanos/pull/5230) Rule: Stateless ruler support restoring `for` state from query API servers. The query API servers should be able to access the remote write storage.
+
 ### Added
 
 - [#5814](https://github.com/thanos-io/thanos/pull/5814) Store: Add metric `thanos_bucket_store_postings_size_bytes` that shows the distribution of how many postings (in bytes) were needed for each Series() call in Thanos Store. Useful for determining limits.