Improve changelog entry

Signed-off-by: Douglas Camata <159076+douglascamata@users.noreply.github.com>

CHANGELOG.md

@@ -24,7 +24,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#6207](https://github.com/thanos-io/thanos/pull/6207) Receive: Remove the shipper once a tenant has been pruned.
 - [#6216](https://github.com/thanos-io/thanos/pull/6216) Receiver: removed hard-coded value of EnableExemplarStorage flag and set it according to max-exemplar value.
 - [#6222](https://github.com/thanos-io/thanos/pull/6222) mixin(Receive): Fix tenant series received charts.
-- [#6218](https://github.com/thanos-io/thanos/pull/6218) Store: handle ResourceExhausted as a non-server error.
+- [#6218](https://github.com/thanos-io/thanos/pull/6218) mixin(Store): handle ResourceExhausted as a non-server error. As a consequence, this error won't contribute to Store's grpc errors alerts.
 
 ### Changed
 - [#6168](https://github.com/thanos-io/thanos/pull/6168) Receiver: Make ketama hashring fail early when configured with number of nodes lower than the replication factor.