JIRA-OSDOCS3200: Added Autoscaling intro and hyperlink in ROSA service definition

Author: sayjadha

modules/rosa-sdpolicy-platform.adoc

@@ -52,7 +52,12 @@ The following table shows the frequency of backups:
 
 [id="rosa-sdpolicy-autoscaling_{context}"]
 == Autoscaling
-Node autoscaling is available on {product-title}.
+Node autoscaling is available on {product-title}. You can configure the autoscaler option to automatically scale the number of machines in a cluster.
+
+[role="_additional-resources"]
+.Additional resources
+* xref:../../rosa_cluster_admin/rosa_nodes/rosa-nodes-about-autoscaling-nodes.adoc#rosa-nodes-about-autoscaling-nodes[About autoscaling nodes on a cluster]
+
 
 [id="rosa-sdpolicy-daemonsets_{context}"]
 == Daemonsets