Disambiguation is also triggered in cases of Multilingual bots. For non-English language conversations when disambiguation gets triggered, the Did you mean? button text also comes in the same language as the users'. The English Did you mean? text (under the User Message section) is auto-translated to the current language of the conversation and used on the bot.
The image below is of a bot with English and Spanish enabled on it. When a user utterance "reservar billete" leads to the bot disambiguating between rail ticket and air ticket, this is how disambiguation's Did you mean? text looks like.
Apart from the auto-translation, in order to have more control over the Did you mean? button text, you can also configure the "Did you mean" button text in different languages by yourself. All you need to do is click on the language icon next to Did you mean? in order to get the option for editing the text, as shown below.
This is how you can set up Disambiguation Messages for Multilingual bots.