Server section of promtail documentation is incomplete

[a-a-abramov]

Describe the bug
Some fields are absent from server section of Promtail's configuration. For instance http_tls_config – it's possible to run Promtail's loki_push_api behind TLS, but this part of documentation is missing.

We're pretty sure it's documentation issue only, because (1.) both Loki and Promtail use the same web server package from Weaveworks and (2.) this Promtail config actually works as expected – :3100 is accessible via https only:

server:
  http_listen_port: 3200

positions:
  filename: /var/lib/promtail/positions.yaml

clients:
- url: https://example.com:3100/loki/api/v1/push
  tenant_id: tenant1
  external_labels:
    dc: dc1
    host: example.dc1.com

scrape_configs:
- job_name: loki_push_api
  loki_push_api:
    server:
      http_listen_port: 3100
      http_tls_config:
        cert_file: /etc/ssl/certs/some.crt
        key_file: /etc/ssl/private/some.key
    use_incoming_timestamp: true
  pipeline_stages:
    ...

To Reproduce
Nothing besides documentation is broken.

Expected behavior
Documentation page clearly states that it's possible to run loki_push_api behind TLS.

Environment:

Screenshots, Promtail config, or terminal output