fix: Modify tiny-engine-portal helpCenter

Author: xuanlid

packages/tiny-engine-portal/src/help/home/VideoDialog.vue

@@ -39,8 +39,7 @@ export default {
   setup(props, { emit }) {
     const state = reactive({
       videoVisibility: props.videoVisibility,
-      videoData: props.videoData,
-      imgPre: `${import.meta.env.BASE_URL}`
+      videoData: props.videoData
     })
 
     watch(