docs: iroh-relay doesn't create default config file as described in help

[adiibanez]

https://github.com/n0-computer/iroh/releases/download/v0.34.0/iroh-relay-v0.34.0-aarch64-apple-darwin.tar.gz

iroh-relay --help
-c, --config-path <CONFIG_PATH>
Path to the configuration file.

      If provided and no configuration file exists the default configuration will be written to the file.

tried cargo run --features=server --bin iroh-relay -- --config-path=iroh-relay-config.toml --dev too

Relevant Logs
RUST_LOG=debug ./iroh-relay --config-path test.toml
2025-04-06T17:20:31.614293Z DEBUG iroh_relay: ServerConfig {
relay: Some(
RelayConfig {
http_bind_addr: [::]:80,
tls: None,
limits: Limits {
accept_conn_limit: None,
accept_conn_burst: None,
client_rx: None,
},
key_cache_capacity: None,
access: Everyone,
},
),
stun: Some(
StunConfig {
bind_addr: [::]:3478,
},
),
quic: None,
metrics_addr: Some(
[::]:9090,
),
}
2025-04-06T17:20:31.614767Z DEBUG iroh_relay::server: Starting metrics server
2025-04-06T17:20:31.614815Z DEBUG iroh_relay::server: Starting STUN server
2025-04-06T17:20:31.614868Z INFO iroh_relay::server: STUN server listening on [::]:3478
2025-04-06T17:20:31.614841Z INFO metrics-server: iroh_metrics::service: Starting metrics server on [::]:9090
2025-04-06T17:20:31.614893Z DEBUG iroh_relay::server: Starting Relay server
2025-04-06T17:20:31.614953Z INFO stun-server{addr=[::]:3478}: iroh_relay::server: running STUN server addr=Some([::]:3478)
2025-04-06T17:20:31.615277Z INFO iroh_relay::server::http_server: [HTTP/WS] relay: serving on [::]:80
2025-04-06T17:20:31.618156Z DEBUG iroh_relay::server: STUN: received binding request src_addr=[::1]:49403

Expected behavior
generate config file containing defaults. Or sample file with defaults and helpful comments somewhere in the repo

Platform(s)
Desktop:

• OS: OSX
• Version 15.3.1 (24D70)

[flub]

Yeah, that functionality has been removed on purpose. But the help text still needs to be updated to reflect that.

I'm afraid the only way to figure out the config format of the relay server is to read the config structs in the source code. The relay server hasn't really been treated like an end-user porduct...

I'll leave this issue open to update the docs.