📝 Update release notes

docs/en/docs/release-notes.md

@@ -31,6 +31,10 @@ hide:
 * ✏️ Fix typos in `docs/zh/docs/tutorial/extra-data-types.md`. PR [#10727](https://github.com/tiangolo/fastapi/pull/10727) by [@HiemalBeryl](https://github.com/HiemalBeryl).
 * 🌐 Add Russian translation for `docs/ru/docs/tutorial/dependencies/classes-as-dependencies.md`. PR [#10410](https://github.com/tiangolo/fastapi/pull/10410) by [@AlertRED](https://github.com/AlertRED).
 
+### Internal
+
+* 🔧  Add support for translations to languages with a longer code name, like `zh-hant`. PR [#10950](https://github.com/tiangolo/fastapi/pull/10950) by [@tiangolo](https://github.com/tiangolo).
+
 ## 0.109.0
 
 ### Features