📝 Update release notes

Author: github-actions

docs/release-notes.md

@@ -20,6 +20,7 @@
 
 ### Docs
 
+* 📝 Update docs for Decimal, use proper types. PR [#719](https://github.com/tiangolo/sqlmodel/pull/719) by [@tiangolo](https://github.com/tiangolo).
 * 📝 Add source examples for Python 3.9 and 3.10. PR [#715](https://github.com/tiangolo/sqlmodel/pull/715) by [@tiangolo](https://github.com/tiangolo).
 
 ### Internal