截图地址修改，多出一个斜杠

alien-store/src/main/java/shop/alien/store/util/FileUploadUtil.java

@@ -121,7 +121,7 @@ public class FileUploadUtil {
                     File videoFile = new File(cacheVideoPath);
                     //获取视频某帧截图
                     log.info("FileUpload.uploadMoreFile 视频文件复制完毕, 获取第一秒图片 {}", videoFile.getName());
-                    String videoPath = videoUtils.getImg(uploadDir + "/" + videoFile.getName());
+                    String videoPath = videoUtils.getImg(uploadDir + videoFile.getName());
                     log.info("FileUpload.uploadMoreFile 视频文件复制完毕, 图片位置 {}", videoPath);
                     if (!videoPath.isEmpty()) {
                         File videoImgFile = new File(videoPath);