fix：图片预览地址拼接

src/_shanghu_detail-edit.js

@@ -113,8 +113,11 @@ window.addEventListener('load', function () {
 				}
 			},
 			showImage(list, index) {
+				const images = list.map((item)=>{
+					return this.previewUrl + item
+				})
 				vant.ImagePreview({
-					images: list,
+					images,
 					startPosition: index,
 					closeable: true,
 				});