📝 Update release notes

docs/en/docs/release-notes.md

@@ -2,6 +2,7 @@
 
 ## Latest Changes
 
+* 🐛 Fix support for prefix on APIRouter WebSockets. PR [#2640](https://github.com/tiangolo/fastapi/pull/2640) by [@Kludex](https://github.com/Kludex).
 * ⬆️ Update ujson ranges for CVE-2021-45958. PR [#4804](https://github.com/tiangolo/fastapi/pull/4804) by [@tiangolo](https://github.com/tiangolo).
 * ⬆️ Upgrade dependencies upper range for extras "all". PR [#4803](https://github.com/tiangolo/fastapi/pull/4803) by [@tiangolo](https://github.com/tiangolo).
 * ⬆ Upgrade Swagger UI - swagger-ui-dist@4. This handles a security issue in Swagger UI itself where it could be possible to inject HTML into Swagger UI. Please upgrade as soon as you can, in particular if you expose your Swagger UI (`/docs`) publicly to non-expert users. PR [#4347](https://github.com/tiangolo/fastapi/pull/4347) by [@RAlanWright](https://github.com/RAlanWright).