Alerting: Document Mimir compatibility for Prometheus conversion API endpoints (#108741)
Document Mimir compatibility for Prometheus conversion API endpoints
(cherry picked from commit 412704c9de)
Co-authored-by: Alexander Akhmetov <me@alx.cx>
* docs(alerting): Import to Grafana-managed rules
* apply latest evaluation changes
* Add additional conversion details to How it works section
* fix ref link
* fix Data source input name
* more details about the `Target data source` input