修改导入bug

cqb-paper/src/main/java/com/qmth/cqb/paper/service/ImportPaperService.java

@@ -245,6 +245,9 @@ public class ImportPaperService {
                 // 设置大题类
                 initQuesHeader(paper, paperDetail, paperDetails, ++mainQuesNum, importPaperCheck);
 
+                // 设置当前索引,防止多余循环
+                i = importPaperCheck.index - 1;
+
             } else if (pText.matches("^\\d{1,}\\.[\\s\\S]*")
                     || (isNested(importPaperCheck) && !pText.startsWith("["))) {