Move scherzo.dereckson.be to Windriver

Summary:
Allow to update Zed documentation in real time.

Ref T1676

Test Plan:

• Run Zed documentation build script
• Browse https://scherzo.dereckson.be/doc/zed

Reviewers: dereckson

Reviewed By: dereckson

Maniphest Tasks: T1676

Differential Revision: https://devcentral.nasqueron.org/D3209