This is a fairly large and serious amount of work, for this you need to hire professionals who are involved in the translation of documentation. Share what services you used? I am preparing a roadmap for one project, and I want to make it in several languages. For this I’m looking for a qualified translation. I am considering the option with this service https://thewordpoint.com/services/certified, based on the description, they are engaged in the translation of documentation. But I would also like to hear feedback from other people and other options.