changelog: add notes about closing #13655

[skip ci]

CHANGELOG.md

@@ -29,6 +29,7 @@
 * **Internal metrics**: Renamed `grafana_info` to `grafana_build_info` and added branch, goversion and revision [#13876](https://github.com/grafana/grafana/pull/13876)
 * **Datasource Proxy**: Keep trailing slash for datasource proxy requests [#13326](https://github.com/grafana/grafana/pull/13326), thx [@ryantxu](https://github.com/ryantxu)
 * **OAuth**: Fix Google OAuth relies on email, not google account id [#13924](https://github.com/grafana/grafana/issues/13924), thx [@vinicyusmacedo](https://github.com/vinicyusmacedo)
+* **Dashboard**: Toggle legend using keyboard shortcut [#13655](https://github.com/grafana/grafana/issues/13655), thx [@davewat](https://github.com/davewat)
 
 ### Breaking changes