Wrong assertion with TLS passthrough in reverse proxy doc

[HarukaMa]

docs/src/pages/selfhosted/migration/enable-reverse-proxy.mdx

Line 16 in 85e12be

This capability is called **TLS passthrough**, and among common reverse proxies, **only Traefik supports it** via its TCP routers. Other reverse proxies (Nginx, Caddy, Nginx Proxy Manager) terminate TLS themselves and cannot forward the raw encrypted connection, which breaks the proxy's certificate management.

This is not true; at least nginx supports tls passthrough with stream module. See https://nginx.org/en/docs/stream/ngx_stream_core_module.html.

Depends on if your distro enables the feature though, but at least on Debian, it's not hard to convert the existing configuration to be compatible with passthrough on port 443.