Fix link (#1781)

Author: fabrizio-grafana

README.md

@@ -3,4 +3,4 @@
 Grafana supports ClickHouse through a plugin. You can perform a variety of simple or complex ClickHouse queries to visualize logs or metrics stored in ClickHouse. You can also annotate your graphs with events stored in ClickHouse.
 
 Read more about it here:  
-[Grafana ClickHouse Documentation](https://grafana.com/docs/grafana/latest/datasources/clickhouse/)
+[Grafana ClickHouse Documentation](https://grafana.com/docs/plugins/grafana-clickhouse-datasource/latest/)