fix(changelog): typo

CHANGELOG.md

@@ -9,7 +9,7 @@
 * **Elasticsearch**: Support to set Precision Threshold for Unique Count metric, closes [#4689](https://github.com/grafana/grafana/issues/4689)
 * **Navigation**: Add search to org swithcer, closes [#2609](https://github.com/grafana/grafana/issues/2609)
 * **Database**: Allow database config using one propertie, closes [#5456](https://github.com/grafana/grafana/pull/5456)
-* **Graphite**: Add support for groupByNode, closes [#5613](https://github.com/grafana/grafana/pull/5613)
+* **Graphite**: Add support for groupByNodes, closes [#5613](https://github.com/grafana/grafana/pull/5613)
 * **Influxdb**: Add support for elapsed(), closes [#5827](https://github.com/grafana/grafana/pull/5827)
 * **OAuth**: Add support for generic oauth, closes [#4718](https://github.com/grafana/grafana/pull/4718)
 * **Cloudwatch**: Add support to expand multi select template variable, closes [#5003](https://github.com/grafana/grafana/pull/5003)