add `IE_DESC`

yt_dlp/extractor/xiaohongsu.py

@@ -10,6 +10,7 @@ from ..utils.traversal import traverse_obj
 
 class XiaoHongSuIE(InfoExtractor):
     _VALID_URL = r'https?://www\.xiaohongshu.com/explore/(?P<id>[a-f0-9]+)'
+    IE_DESC = '小红书'
     _TESTS = [{
         'url': 'https://www.xiaohongshu.com/explore/6411cf99000000001300b6d9',
         'info_dict': {