Docs: Images in alerts require an ext provider (#25466)
Docs: Images in alerts require an ext provider (#25466)

Be more explicit about the fact that providing images in alert notifications requires an external image storage provider. Previously this read as if it was only necessary for publicly accessible images, but even if they are served from Grafana, the administrator must set up the "local" image provider in the configuration.
grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana