Update docs

Author: marcusolsson

website/docs/annotations.md

@@ -7,6 +7,10 @@ title: Annotations
 
 [Annotations](https://grafana.com/docs/grafana/latest/dashboards/annotations) let you extract data from a data source and use it to annotate a dashboard.
 
+:::info
+Annotations support was added in **v1.0.1**. If you can't select the JSON API data source from the list of data sources, try updating to a more recent version.
+:::
+
 To use the JSON API data source for annotations, follow the instructions on [Querying other data sources](https://grafana.com/docs/grafana/latest/dashboards/annotations/#querying-other-data-sources). Make sure to select the JSON API from the list of data sources.
 
 Configure a query with _at least_ two fields: