typo fix

Author: jekuer

src/atcb-generate.js

@@ -702,7 +702,7 @@ function atcb_generate_date_button(data, parent, subEvent = 'all', oneOption = f
       btnDetails.append(btnDescription);
     } else {
       // in other cases, at least give the headline the option to grow
-      btnHeadline.sstyle.lineClamp = '2';
+      btnHeadline.style.lineClamp = '2';
       // and center, if nothing else is here
       if (fullTimeInfo.length == 0 && (data.recurrence == null || data.recurrence == '')) {
         btnRight.style.alignSelf = 'center';