fix(import): 修复导入参数中的Excel注解配置

- 将dataType字段的@Schema注解替换为@Excel注解
- 将plaintiffAppellant字段的@Schema注解替换为@Excel注解
- 确保字段正确映射到Excel导入功能

src/main/java/com/gxwebsoft/credit/param/CreditCourtAnnouncementImportParam.java

@@ -22,10 +22,10 @@ public class CreditCourtAnnouncementImportParam implements Serializable {
     @Excel(name = "当事人")
     private String otherPartiesThirdParty;
 
-    @Schema(description = "公告类型")
+    @Excel(name = "公告类型")
     private String dataType;
 
-    @Schema(description = "公告人")
+    @Excel(name = "公告人")
     private String plaintiffAppellant;
 
     @Excel(name = "刊登日期")