docs(changelog): adds note about closing #7195

CHANGELOG.md

@@ -10,6 +10,7 @@
 * **Graph**: Fixed centering of y-axis label [#7099](https://github.com/grafana/grafana/issues/7099)
 * **Graph**: Fixed graph legend table mode and always visible scrollbar [#6828](https://github.com/grafana/grafana/issues/6828)
 * **Templating**: Fixed template variable value groups/tags feature [#6752](https://github.com/grafana/grafana/issues/6752)
+* **Webhook**: Fixed webhook username mismatch [#7195](https://github.com/grafana/grafana/pull/7195), thx [@theisenmark](https://github.com/theisenmark)
 
 ## Enhancements
 * **Elasticsearch**: Added support for all moving average options [#7154](https://github.com/grafana/grafana/pull/7154), thx [@vaibhavinbayarea](https://github.com/vaibhavinbayarea)