[task-3682]子文件与控制添加盖章功能/后端：文件盖章接口外来受控文件盖章功能

ibps-comp-base-root/modules/comp-file-server-api/src/main/java/com/lc/ibps/file/server/api/IUploadService.java

@@ -122,7 +122,7 @@ public interface IUploadService {
 	public APIResult<AttachmentPo> stamp(
 			@NotNull(message = "文件ID不能为空")
 			@RequestParam(name = "attachmentId", required = true)String attachmentId,
-			@NotNull(message = "盖章动作不能为空，值可以为：controlled,void")
+			@NotNull(message = "盖章动作不能为空，值可以为：controlled(受控),void(作废),external(外来文件)")
 			@RequestParam(name = "action", required = true)String action,
 			@RequestParam(name = "waterMark", required = false, defaultValue = "false") Boolean waterMark
 	);