Docs: Rephrase Alert execution section in Alerting (#32631)

* Docs: Rephrase Alert execution section in Alerting

* Small fix

datasources -> data sources

* Rephrase alert execution
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Sofia Papagiannaki 2021-04-06 19:58:22 +03:00 committed by GitHub
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@ -37,8 +37,10 @@ The actual notifications are configured and shared between multiple alerts.
## Alert execution
Alert rules are evaluated in the Grafana backend in a scheduler and query execution engine that is part
of core Grafana. Only some data sources are supported right now. They include `Graphite`, `Prometheus`, `Loki`, `InfluxDB`, `Elasticsearch`,
`Google Cloud Monitoring`, `Cloudwatch`, `Azure Monitor`, `MySQL`, `PostgreSQL`, `MSSQL`, `OpenTSDB`, `Oracle`, and `Azure Data Explorer`.
of core Grafana. Alert rules can query only backend data sources with alerting enabled. Such data sources are:
- builtin or developed and maintained by grafana, such as: `Graphite`, `Prometheus`, `Loki`, `InfluxDB`, `Elasticsearch`,
`Google Cloud Monitoring`, `Cloudwatch`, `Azure Monitor`, `MySQL`, `PostgreSQL`, `MSSQL`, `OpenTSDB`, `Oracle`, and `Azure Data Explorer`
- any community backend data sources with alerting enabled (`backend` and `alerting` properties are set in the [plugin.json]({{< relref "../developers/plugins/metadata.md" >}}))
## Metrics from the alert engine