[DOC] http.md update with full example of a reverse proxy

[Menel]

I now *really* added this small patch for the doc/http website, to give a full example of a reverse proxy usecase that makes use of the more important settigns described on that website.

Could you delete that last other mail, no idea what I did there.
Here is the real patch .....


Gretings Menel

[Kim Alvefur]

On Fri, Jul 12, 2024 at 09:15:30PM +0200, 'Menel' via prosody-dev wrote:
>patch

Thanks, merged (rebased).