sample config for reverse proxying nitter using caddy
Currently the wiki has a sample config for Apache and Nginx users, but none for caddy(which is a nice little webserver)
Here is a sample config for [caddy](https://github.com/caddyserver/caddy) reverse proxy setup for nitter listening on port `8080`
```
:443, example.org
tls no@body.me
log {
  level debug
}
route {
  reverse_proxy  127.0.0.1:8080
}
```

Furthermore, I think there should be only one single page for all reverse proxy sample configs instead of creating separate wiki pages for different web servers, which can potentially tidy up the wiki a bit.