docs: adds note in changelog for #8110

CHANGELOG.md

@@ -19,6 +19,7 @@
 * **Units**: New number format: Scientific notation [#7781](https://github.com/grafana/grafana/issues/7781) thx [@cadnce](https://github.com/cadnce)
 * **Oauth**: Add common type for oauth authorization errors [#6428](https://github.com/grafana/grafana/issues/6428) thx [@amenzhinsky](https://github.com/amenzhinsky)
 * **Templating**: Data source variable now supports multi value and panel repeats [#7030](https://github.com/grafana/grafana/issues/7030) thx [@mtanda](https://github.com/mtanda)
+* **Telegram**: Telegram alert is not sending metric and legend. [#8110](https://github.com/grafana/grafana/issues/8110), thx [@bashgeek](https://github.com/bashgeek)
 
 ## Fixes
 * **Table Panel**: Fixed annotation display in table panel, [#8023](https://github.com/grafana/grafana/issues/8023)