Error Found in the Practice Quiz for "Spelling changes in the preterit"

Question

Error of the verb "Chocar" conjugated in the yo form. What is there now is "Chocó". But because chocar is a "car" verb, in the preterit it should be changed to "Choqué". I do not know how to fix this error, or how to contact the creators of this section.

Link follows here: http://www.spanishdict.com/topics/practice/61

You may contact them at: [e-mail] There isn't any way we can change it on this end. - rac1, Sep 26, 2016

Thank you for catching it. - rac1, Sep 26, 2016

Welcome to SpanishDict. We ask that all new members complete their profiles with their native language, and what level of Spanish you feel you are, like, beginner, intermediate, etc. as well as gender. - ray76, Sep 26, 2016

Chocar - is to hit, collide, chocó , he crashed , ? - ray76, Sep 27, 2016