📝 Update release notes

docs/en/docs/release-notes.md

@@ -2,6 +2,7 @@
 
 ## Latest changes
 
+* Add note about [PyCharm Pydantic plugin](https://github.com/koxudaxi/pydantic-pycharm-plugin) to docs. PR [#1420](https://github.com/tiangolo/fastapi/pull/1420) by [@koxudaxi](https://github.com/koxudaxi).
 * Update and clarify testing function name. PR [#1395](https://github.com/tiangolo/fastapi/pull/1395) by [@chenl](https://github.com/chenl).
 * Fix duplicated headers created by indirect dependencies that use the request directly. PR [#1386](https://github.com/tiangolo/fastapi/pull/1386) by [@obataku](https://github.com/obataku) from tests by [@scottsmith2gmail](https://github.com/scottsmith2gmail).
 * Upgrade Starlette version to `0.13.4`. PR [#1361](https://github.com/tiangolo/fastapi/pull/1361) by [@rushton](https://github.com/rushton).