* ✏ Tweak wording in `docs/en/docs/advanced/dataclasses.md`. PR [#3698](https://github.com/tiangolo/fastapi/pull/3698) by [@pfackeldey](https://github.com/pfackeldey).
* 📝 Add note about Python 3.10 `X | Y` operator in explanation about Response Models. PR [#5307](https://github.com/tiangolo/fastapi/pull/5307) by [@MendyLanda](https://github.com/MendyLanda).
* 📝 Add note about Python 3.10 `X | Y` operator in explanation about Response Models. PR [#5307](https://github.com/tiangolo/fastapi/pull/5307) by [@MendyLanda](https://github.com/MendyLanda).
* 🌐 Fix MkDocs file line for Portuguese translation of `background-task.md`. PR [#5242](https://github.com/tiangolo/fastapi/pull/5242) by [@ComicShrimp](https://github.com/ComicShrimp).
* 🌐 Fix MkDocs file line for Portuguese translation of `background-task.md`. PR [#5242](https://github.com/tiangolo/fastapi/pull/5242) by [@ComicShrimp](https://github.com/ComicShrimp).
* ✏ Fix a small code highlight line error. PR [#5256](https://github.com/tiangolo/fastapi/pull/5256) by [@hjlarry](https://github.com/hjlarry).
* ✏ Fix a small code highlight line error. PR [#5256](https://github.com/tiangolo/fastapi/pull/5256) by [@hjlarry](https://github.com/hjlarry).