NLU: look-up tables how to handle aliases/spelling mistakes

@Ghostvv This sounds like the correct answer for general spelling mistakes:

or write a component to recognize them.

Thank you @Juste for this:

And then use of synonym tables built in Rasa feature for entity synonym “iPhone” “iPhne” etc.

There also some good references in another thread from @tyd :

Not sure if this simple sample is good (can anyone confirm)?