I just turned it into a txt. file then opened it normally in Studio. Without doing anything more the "explanation" strings actually help in the file. Then you can either copy over the contents back into the original file or rename your translation file into a lua file. On the other hand, my game now shows a black screen, so maybe I'm not the best source for help. But to be fair, when working with the original zip file I can't even get it to upload without errors, so who knows.