Consider updating "/scaling" to reference newer blog posts about scaling

[edburns]

The "/scaling" guide, https://oracle.github.io/weblogic-kubernetes-operator/managing-domains/domain-lifecycle/scaling/ , references the blog post Using Prometheus to Automatically Scale WebLogic Clusters on Kubernetes.

I judge it should also reference these references.

• https://blogs.oracle.com/weblogicserver/post/horizontal-pod-autoscaler-hpausing-weblogic-exporter-metrics
• https://www.youtube.com/watch?v=aKBG6yJ3sMg