Cleanup Loki documentation to be more consistent #62
Description
Blocked by canonical/grafana-agent-operator#46 and canonical/loki-k8s-operator#466.
Right now, our Loki documentation is a bit inconsistent, since some of the charms use different labels to query the data, and some others need to filter by the filename instead of the Juju architecture because of limitations with the Loki K8s operator.
After the linked issues get fixed, we can rewrite the Loki documentation to be a lot more consistent.