fix: 文章详情修改

@@ -327,7 +327,7 @@ func (l *SystemUpdateArticleLogic) getSections(req *types.SystemArticleUpdateReq
 	lo.ForEach(req.Section, func(item types.ArticleSection, index int) {
 		strList := strings.Split(item.Content, "\n")
 		for key, value := range strList {
-			if value == "" && item.ParagraphType != 2 {
+			if value == "" && item.ParagraphType == domain.ParagraphTypeNone {
 				continue
 			}
 			section := domain.ArticleSection{

@@ -40,3 +40,9 @@ type SortArticleSection []*ArticleSection
 func (a SortArticleSection) Len() int           { return len(a) }
 func (a SortArticleSection) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
 func (a SortArticleSection) Less(i, j int) bool { return a[i].SortBy < a[j].SortBy }
+
+const (
+	ParagraphTypeNone   = 0
+	ParagraphTypeText   = 1
+	ParagraphTypeImages = 2
+)