Point users to upgrade RP version

Author: kbatuigas

modules/manage/pages/cluster-maintenance/cluster-balancing.adoc

@@ -125,6 +125,8 @@ This is a beta feature for v24.2 and is not recommended for use for production c
 ```bash
 curl -X PUT -d '{"state": "active"}' http://127.0.0.1:9644/v1/features/node_local_core_assignment
 ```
+
+xref:upgrade:index.adoc[Upgrade to 24.3 or later] to use this feature for production clusters.
 ====
 
 In Redpanda, every partition replica is assigned to a CPU core on a broker. While Redpanda's default <<partition-replica-balancing,partition balancing>> monitors cluster-level events, such as the addition of new brokers or broker failure to balance partition assignments, it does not account for the distribution of partitions _within_ an individual broker. 
@@ -133,7 +135,7 @@ Prior to Redpanda version 24.2, this meant that some cores on a broker could ina
 
 Starting in v24.2, topic-aware intra-broker partition balancing allows for dynamically reassigning partitions within a broker.  Redpanda prioritizes an even distribution of a topic's partition replicas across all cores in a broker. If a broker's core count changes, when the broker starts back up, Redpanda can check partition assignments across the broker's cores and reassign partitions, so that a balanced assignment is maintained across all cores. Redpanda can also check partition assignments when partitions are added to or removed from a broker, and rebalance the remaining partitions between cores.
 
-NOTE: Changing the number of CPU cores in a running cluster is supported from v24.2 only, and requires that you enable `node_local_core_assignment` as described in the previous note.
+NOTE: Decreasing the number of CPU cores in a running cluster is supported from v24.2 only, and requires that you enable `node_local_core_assignment` as described in the previous note. 
 
 To determine when to use intra-broker partition balancing, use the public metrics for CPU usage described in the xref:manage:monitoring.adoc#cpu-usage[Monitoring] guide.