Change the quotation marks, that are automatically rendered as smart or curly quotes inside your content, from the default English style (“…”) to anything you like, e.g. to Croatian/Hungarian/Polish/Romanian style quotation marks („…”), Czech or German style („…“), Danish style (»…«), Finnish or Swedish style (”…”), French style (« … » – with spaces), Greek/Italian/Norwegian/Portuguese/Russian/Spanish/Swiss style («…» – without spaces), Japanese or Traditional Chinese style (「⋯」), or actually to any arbitrary character combination of your choice. Of course you can turn off curly quotes entirely by picking the so-called "dumb" quotes ("…").