Would you be interested in translating the documentation of LittlevGL?
The whole documentation is uploaded to zanata.org where you can easily pick a language and translate the texts paragraph-by-paragraph.
If you are interested in it you need to register at zanata.org. Comment here with your username and your language and I’ll grant permission to you.
Of course, you don’t need to translate the whole docs, every contribution is welcome.
A translation will be added to the final docs if at least the Porting section is fully translated.
Meet you at zanata.org