Russian Russian and English versions of the plugin are always made by me, maybe once I got mixed up and accidentally downloaded the Russian version. If this happens, do not hesitate to talk about it, I try to fix such errors quickly.
Also, some plugins may still contain Russian-language examples (for example, names of buildings, weather, names and descriptions of maps), but these are just examples, you must either edit these things in the plugin parameters, or create new ones in your language.