[AKS] added balance-similar-node-groups param to CA profile

Author: zr-msft

articles/aks/cluster-autoscaler.md

@@ -113,6 +113,7 @@ You can also configure more granular details of the cluster autoscaler by changi
 | scale-down-unready-time          | How long an unready node should be unneeded before it is eligible for scale down         | 20 minutes    |
 | scale-down-utilization-threshold | Node utilization level, defined as sum of requested resources divided by capacity, below which a node can be considered for scale down | 0.5 |
 | max-graceful-termination-sec     | Maximum number of seconds the cluster autoscaler waits for pod termination when trying to scale down a node. | 600 seconds   |
+| balance-similar-node-groups | Detect similar node pools and balance the number of nodes between them | false |
 
 > [!IMPORTANT]
 > The cluster autoscaler profile affects all node pools that use the cluster autoscaler. You can't set an autoscaler profile per node pool.