Update docs: kubernetes scrapeconfig example

[cbrherms]

Mostly putting this here in case anyone else finds it useful (unsure if this project is still being maintained), but an example of this being used with kube-prometheus-stack in a kubernetes environment using secrets for the api key:

---
# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/monitoring.coreos.com/scrapeconfig_v1alpha1.json
apiVersion: monitoring.coreos.com/v1alpha1
kind: ScrapeConfig
metadata:
  name: &name octoprint
spec:
  metricsPath: /plugin/prometheus_exporter/metrics
  authorization:
    type: Bearer
    credentials:
      name: scrape-config-secret
      key: octoprint-api-key
  relabelings:
    - action: replace
      replacement: *name
      targetLabel: job
  staticConfigs:
    - targets:
        - "octopi.local:5000"

This references a secret called scrape-config-secret and a key of octoprint-api-key - making using of bearer token instead of params

[tg44]

It is maintained like: if you open a PR I will merge it. The currently opened PRs are open bcs of the inability to make the contributors to cooperate :(