Document that changing host/port of Optimize needs adjustments in the startup script

AT:

• in the configuration section of the technical guide, the administrator can read a warning that changing that:
  • changing the host/port of Optimize needs adjustments in the start up script
  • changing the host/port of Elasticsearch needs adjustments in the start up script if you don't use the script with the standalone tag (you don't have your own Elasticsearch instance configured).
• in the configuration service-config.yaml and environment-config.yaml I can see a warning similar to the one mentioned in the former point