Edit Foundry egg

[Liborsaf]

Description

• Add dedicated server page to README.md
• Edit some copy-paste things in README.md
• Add default value to query port

Checklist for all submissions

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you tested and reviewed your changes with confidence that everything works?
• Did you branch your changes and PR from that branch and not from your master branch?
  • If not, why?:

• You verify that the start command applied does not use a shell script
  • If some script is needed then it is part of a current yolk or a PR to add one
• The egg was exported from the panel

[QuintenQVD0]

now export the egg from a panel and then this can me merged.

[Liborsaf]

now export the egg from a panel and then this can me merged.

Done

[QuintenQVD0]

LGTM!