增加注释

long-article-server/src/main/java/com/tzld/piaoquan/longarticle/service/local/impl/ContentServiceImpl.java

@@ -318,6 +318,7 @@ public class ContentServiceImpl implements ContentService {
             //查询到改写的视频  随机选择原视频或者改写后的视频
             if (videoEndScreen != null) {
                 transformationType = TransformationEnum.EXIST.getType();
+                //存在片尾引导后  50%概率走有片尾引导的视频
                 publishType = ToolUtil.getRandom(2);
                 if (publishType == 1) {
                     videoOssPath = videoEndScreen.getNewOssPath();