refactor(system): 修正 AppCourses 类中字段的 @Excel 注解

- 将 sort、limitNum、details、fitPeople、startTime 和 endTime 字段的 @Excel 注解中的 name 属性修改为正确的字段名称
- 修正相关字段的 @Schema 注解中的 description 属性

national-motion-module-system/national-motion-system-biz/src/main/java/org/jeecg/modules/system/app/entity/AppCourses.java

@@ -102,24 +102,24 @@ public class AppCourses implements Serializable {
     @Schema(description = "排序")
     private Integer sort;
 	/**限购次数*/
-	@Excel(name = "排序", width = 15)
-    @Schema(description = "排序")
+	@Excel(name = "限购次数", width = 15)
+    @Schema(description = "限购次数")
     private Integer limitNum;
 	/**服务详情*/
-	@Excel(name = "排序", width = 15)
-    @Schema(description = "排序")
+	@Excel(name = "服务详情", width = 15)
+    @Schema(description = "服务详情")
     private Integer details;
 	/**适用人群*/
-	@Excel(name = "排序", width = 15)
-    @Schema(description = "排序")
+	@Excel(name = "适用人群", width = 15)
+    @Schema(description = "适用人群")
     private Integer fitPeople;
 	/**开始时间*/
-	@Excel(name = "排序", width = 15)
-    @Schema(description = "排序")
+	@Excel(name = "开始时间", width = 15)
+    @Schema(description = "开始时间")
     private Integer startTime;
 	/**结束时间*/
-	@Excel(name = "排序", width = 15)
-    @Schema(description = "排序")
+	@Excel(name = "结束时间", width = 15)
+    @Schema(description = "结束时间")
     private Integer endTime;
 	/**系统状态;状态（0-正常,1-冻结）*/
 	@Excel(name = "系统状态;状态（0-正常,1-冻结）", width = 15)