Stop styling, emphasis or markup

I’m not sure how to name it.
I would like to stop the markup feature where /WORD/ turn text to italic and also the other markup keys like this one e.g:

**WORD**
--WORD--
_WORD_

A second question would be how exactly is it named? Mark up or styling.

Thank you in advance.

Menu/Tools/Autocorrect/Autocorrect options