Update README.md

README.md

@@ -137,6 +137,7 @@ This repository, including all its contents, sub-projects, modules, and componen
 - [Chinese / 中文](https://github.com/HeyPuter/puter/blob/main/doc/i18n/README.zh.md)
 - [Danish / Dansk](https://github.com/HeyPuter/puter/blob/main/doc/i18n/README.da.md)
 - [English](https://github.com/HeyPuter/puter/blob/main/README.md)
+- [Finnish / Suomi](https://github.com/HeyPuter/puter/blob/main/doc/i18n/README.fi.md)
 - [French / Français](https://github.com/HeyPuter/puter/blob/main/doc/i18n/README.fr.md)
 - [Hindi / हिंदी](https://github.com/HeyPuter/puter/blob/main/doc/i18n/README.hi.md)
 - [Indonesian / Bahasa Indonesia](https://github.com/HeyPuter/puter/blob/main/doc/i18n/README.id.md)