the helm chart's part for alertmanager has the below commented content is this for creating slack alert channel? If yes where can i get the configuration similar to this for Pagerduty?

## Using the config, alertmanager.yml file is created.
  ## We no longer need the config file as query services
  ## delivers the required config.
  # config:
  # global:
  #   resolve_timeout: 1m
  #   slack_api_url: '<https://hooks.slack.com/services/xxx>'

  # templates:
  #   - '/etc/alertmanager/*.tmpl'

  # receivers:
  # - name: 'slack-notifications'
  #   slack_configs:
  #   - channel: '#alerts'
  #     send_resolved: true
  #     icon_url: <https://avatars3.githubusercontent.com/u/3380462>
  #     title: '{{ template "slack.title" . }}'
  #     text: '{{ template "slack.text" . }}'

  # route:
  #   receiver: 'slack-notifications'