message: fix(md-enhance): fix code demo arrow direction
diff: @@ -151,7 +151,7 @@ export default defineComponent({
  h("div", { class: "code-demo-footer" }, [
  code.value.isLegal
  ? h("button", {
  - class: ["toggle-button", { down: isExpanded.value }],
  + class: ["toggle-button", { down: !isExpanded.value }],
  onClick: () => {
  height.value = isExpanded.value
  ? "0"
  