WIP: Resolve "Devdocs: 404 link after container starts"

Closes 504

What does this MR do?

fix link in start script

How confident are you it won't break things if deployed?

very, it's just printed text

Links to related issues

Checklist

• added a test, or explain why one is not needed/possible...
• no unrelated changes
• [-] asked someone for a code review
• joined #foodsharing-beta channel at https://slackin.yunity.org
• [-] added an entry to CHANGELOG.md (description, merge request link, username(s))