improve comment

Author: wxiaoguang

web_src/js/features/common-button.ts

@@ -124,7 +124,7 @@ function onShowModalClick(el: HTMLElement, e: MouseEvent) {
   // * Then, try to query '[name=target]'
   // * Then, try to query '.target'
   // * Then, try to query 'target' as HTML tag
-  // If there is a ".{attr}" part like "data-modal-form.action", then the form's "action" property will be set.
+  // If there is a ".{prop-name}" part like "data-modal-form.action", the "form" element's "action" property will be set, the "prop-name" will be camel-cased to "propName".
   e.preventDefault();
   const modalSelector = el.getAttribute('data-modal');
   const elModal = document.querySelector(modalSelector);