Docs: Update 7.4 What's New to use more correct description of alerting notification template feature (#30502) (#30614)

* use more correct description of feature

* reference variable templating

* add word

(cherry picked from commit ad7d75c14d)

Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>
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Grot (@grafanabot)
2021-01-25 11:41:05 -08:00
committed by GitHub
co-authored by Will Browne
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@@ -79,9 +79,9 @@ The main use case is for [multi-dimensional](https://grafana.com/docs/grafana/la
> **Note:** Queries built with this feature may break with minor version upgrades until Grafana 8 is released.
### Variable support in alert notifications
### Alert notification query label interpolation
You can now provide detailed information to alert notification recipients by injecting alert query data into an alert notification. Labels that exist from the evaluation of the alert query can be used in the alert rule name and in the alert notification message fields. The alert label data is injected into the notification fields when the alert is in the alerting state. When there are multiple unique values for the same label, the values are comma-separated.
You can now provide detailed information to alert notification recipients by injecting alert label data as template variables into an alert notification. Labels that exist from the evaluation of the alert query can be used in the alert rule name and in the alert notification message fields using the `${Label}` syntax. The alert label data is automatically injected into the notification fields when the alert is in the alerting state. When there are multiple unique values for the same label, the values are comma-separated.
![Variable support in alert notifications](/img/docs/alerting/alert-notification-template-7-4.png)