Docs - Update to Introduction to MTA Doc

This document is a bit out of date, by applying the changes below it will better reflect

The list of bullet points on the
https://access.redhat.com/documentation/en-us/migration_toolkit_for_applications/5.3/html/introduction_to_the_migration_toolkit_for_applications/what-is-the-toolkit_getting-started-guide#doc-wrapper
Should include

• Upgrading from OpenJDK 8 to OpenJDK 11
• Upgrading from OpenJDK11 to OpenJDK 17
• Migrating EAP Java applicatons to Azure
• Migrating Spring Boot Java applications to Azure

The heading on table 3.1
OpenJDK 8 & 11 should be Open JDK 8, 11 & 17
Create a new column - Azure and have ticks in the EAP7 and Springboot rows

Chapter 5.
After Web Console add

• Migration Toolkit for Applications Operator

after MTA plugin for Eclipse and Red Hat CodeReady Studio
change

• MTA extension for Eclipse CHE
  to
• MTA extension for Visual Studio Code and Eclipse CHE_
  add
• MTA extension for IntelliJ