The definition of misleading is a true fact that is presented in a way to lead you to a false conclusion.
According to Merriem-Webster, which defines "mislead" as the following:
1. (transitive verb) to lead in a wrong direction or into a mistaken action or belief often by deliberate deceit
2. (intransitive verb) to lead astray; give a wrong impression
Presenting a "true fact" is optional when misleading someone.