fix: 修复段落嵌入,文档字符串不变 (#460)

Author: shaohuzhang1

apps/dataset/serializers/paragraph_serializers.py

@@ -372,6 +372,7 @@ def migrate(self, with_valid=True):
                 # 修改段落信息
                 paragraph_list.update(dataset_id=target_dataset_id, document_id=target_document_id)
             update_document_char_length(document_id)
+            update_document_char_length(target_document_id)
 
         @staticmethod
         def update_problem_paragraph_mapping(target_document_id: str, problem_paragraph_mapping):