📝 Update release notes

[skip ci]

Author: github-actions[bot]

release-notes.md

@@ -8,6 +8,10 @@
 * 📝 Update README with use cases. PR [#9](https://github.com/fastapi/annotated-doc/pull/9) by [@tiangolo](https://github.com/tiangolo).
 * 📝 Add badges to docs. PR [#8](https://github.com/fastapi/annotated-doc/pull/8) by [@tiangolo](https://github.com/tiangolo).
 
+### Internal
+
+* 🔧 Add PEP-639 license metadata. PR [#11](https://github.com/fastapi/annotated-doc/pull/11) by [@bollwyvl](https://github.com/bollwyvl).
+
 ## 0.0.2
 
 ### Features