fix: 图片预览组件，滚动方向与放大缩小关系反了

src/views/material/popup/imagePreviewer.vue

@@ -117,7 +117,7 @@ export default {
       this.ifShow = true
     },
     onImageWheel(e) {
-      if (e.deltaY > 0) {
+      if (e.deltaY < 0) {
         this.scaleRate = this.scaleRate * 1.1
       } else {
         this.scaleRate = this.scaleRate * 0.9