How to provision a dashboard from grafana.com/dashboards when deploying Grafana using the Helm chart?

OK, I finally found what I needed to do. I needed to add a dashboard providers section in my values.yaml file, like so:

dashboardProviders:
  dashboardproviders.yaml:
    apiVersion: 1
    providers:
      - name: default
        orgId: 1
        folder: ""
        type: file
        disableDeletion: false
        editable: false
        options:
          path: /var/lib/grafana/dashboards/default