Improve grafana-agent to otelcol migration docs #212
Description
From @marcusboden during office hours:
The documentation on migrating from grafana-agent to opentelemetry-collector could benefit from either a scripted version of the migration or at the very least a more explicit way of validating telemetry data being collected correctly.
https://documentation.ubuntu.com/observability/track-2/how-to/migrate-gagent-to-otelcol/
One idea could be comparing the number of alerts/metrics before and after, but this is not too reliable due to the presence of grafana-agent-specific/otel-specific metrics.
How can this be improved?