[OpenTelemetry] actualize rr.otel config

[gam6itko]

In Spiral docs we have inconvinience with RR docs

I use version 2024.1.2 for me the right config is

otel:
  resource:
    service_name: "rr_test"
    service_version: "1.0.0"
    service_namespace: "RR-Shop"
    service_instance_id: "UUID"
  insecure: true
  compress: false
  exporter: otlp
  endpoint: 127.0.0.1:4318 # NOTICE! http port not gRPC!

We need to correct it!