Update static/usage/v8/refresher/pull-start-end-events/vue.md

Co-authored-by: Maria Hutt <thetaPC@users.noreply.github.com>

Author: brandyscarney

static/usage/v8/refresher/pull-start-end-events/vue.md

@@ -1,4 +1,4 @@
-```html
+```vue
 <template>
   <ion-header>
     <ion-toolbar>