Problems with handling slots and correct storage method

I am facing a problem in entering the names of the cities, for example the correct name for the city is Paris, and when, for example, the user enters the following sentence “I live in Parisiiis”, Rasa Nlu will discover that the city is “Pariiis” like this “i live in [Paris] (city)” And it stores it in the Slot with the wrong write What is the correct way to store the city in the slot by writing it correctly? Do we use, for example, Regex?