fix: update FileSerializer operation to use data dictionary for file ID

Author: liuruibin

apps/knowledge/serializers/document.py

@@ -561,7 +561,7 @@ def download_source_file(self):
             file = QuerySet(File).filter(source_id=self.data.get('document_id')).first()
             if not file:
                 raise AppApiException(500, _('file not exist'))
-            return FileSerializer.Operate(id=file.id).get(with_valid=True)
+            return FileSerializer.Operate(data={'id': file.id}).get(with_valid=True)
 
         def one(self, with_valid=False):
             if with_valid: