📝 Update release notes

docs/release-notes.md

@@ -1,5 +1,7 @@
 ## Latest changes
 
+* Update section about [Help FastAPI - Get Help](https://fastapi.tiangolo.com/help-fastapi/). PR [#339](https://github.com/tiangolo/fastapi/pull/339).
+
 * Refine internal type declarations to improve/remove Mypy errors in users' code. PR [#338](https://github.com/tiangolo/fastapi/pull/338).
 
 * Update and clarify [SQL tutorial with SQLAlchemy](https://fastapi.tiangolo.com/tutorial/sql-databases/). PR [#331](https://github.com/tiangolo/fastapi/pull/331) by [@mariacamilagl](https://github.com/mariacamilagl).