Update jspsych-same-different-html.md
Update jspsych-same-different-html.md

updated the trial type name to the correct one
wolfgangwalther/jsPsych,jspsych/jsPsych,jspsych/jsPsych,wolfgangwalther/jsPsych,jspsych/jsPsych,jodeleeuw/jsPsych,jspsych/jsPsych