update the mna config-item

Author: demonCoder95

cluster/config-defaults.yaml

@@ -1207,7 +1207,7 @@ teapot_admission_controller_scheduling_controls_default_architecture: "amd64"
 # Ignore recommendations for downgrading the instance generation of the master nodes
 # This is required to persist the upgrade of instance generation for master nodes
 # in a cluster.
-master_node_autoscaler_instance_downgrade_disabled: "false"
+master_node_autoscaler_instance_generation_downgrade_disabled: "false"
 
 # role-sync-controller configs
 # Enabled by default only on Zalando EKS clusters