mod_rest/apidemo: Serve yaml with a (non-standard) content-type There's no Standard from what I can tell, found this one somewhere. Serving as text/* might help some clients do something sensible like not treat it as a binary file, which it isn't.

---
labels:
- Statistics
summary: Collect statistics on user registration
---

Description
===========

This module measures the rate at which users register on the server (through
providers like `mod_register_ibr` or `mod_register_web`).