Update docs/overview/eye-tracking.md
Update docs/overview/eye-tracking.md

Co-authored-by: bjoluc <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@bjoluc.de>
jspsych/jsPsych,jspsych/jsPsych,jspsych/jsPsych,jspsych/jsPsych