Occasionally some funky stuff happens with technology. Usually the cause can be traced down. This time, it's not exactly clear what happened, but the story is hilarious nevertheless. It would appear that the Nook eBook version wanted to remove all references to Kindle in the book War and Peace.
In the translated book, all references to the word "kindled" have been replaced by "nookd." The only explanation I can think of is someone got lazy in the conversion from Kindle eBook to Nook eBook. It would appear that someone CTRL +F'd to change the title reference of Kindle to Nook and didn't realize the word was used elsewhere in the text.
It's highly unlikely that it was done on purpose, but it is hilarious even if it wasn't. Another example of why people should take the extra time to do a job right. If it was done on purpose, I can't see the reason for it. I'm sure a fixed version will be released shortly, if it hasn't already.