Update aks use guide for autoscaling.

[galiacheng]

This pull request modifies the documentation/site/content/managing-domains/aks/_index.md file to update the instructions for configuring Oracle WebLogic Server on Azure Kubernetes Service (AKS). The changes mainly involve updating the configuration steps, modifying the terminology used, and reordering some of the sections.

The most important changes include:

Updates to Configuration Steps:

• The instructions for the Basics configuration blade have been modified to simplify the process of moving to the next step. The user now simply clicks Next instead of Next: Configure AKS cluster.
• The AKS configuration blade now includes an Advanced section where users can specify additional optional configurations.
• The TLS/SSL configuration blade has been updated to provide clearer instructions for configuring Oracle WebLogic Server on a secure HTTPS port.
• The Load balancing blade has been updated to provide three options for load balancing: Application Gateway Ingress Controller, Standard Load Balancer service, and No Load Balancer.
• The DNS blade has been updated to simplify the process of provisioning the Oracle WebLogic Server Administration Console using a custom DNS name.

Terminology Changes:

• The Configure AKS Cluster blade has been renamed to AKS.
• The Java EE Application section has been renamed to Application.
• The TLS/SSL configuration blade has been renamed to TLS/SSL.
• The Networking blade has been renamed to Load balancing.
• The DNS Configuration blade has been renamed to DNS.

Section Reordering:

• The option to generate a self-signed frontend certificate in the Application Gateway Ingress Controller section has been moved to the beginning of the list of options.