readme: -修改为相对位置
  -对内容类型进行修改
  
  ```python
  
  from transformers import BertTokenizer, BertModel,BertConfig
  
  
  Config = BertConfig.from_pretrained("napoler/chinese_roberta_L-2_H-512_relative_key_query_token_type_100")
  tokenizer = BertTokenizer.from_pretrained('napoler/chinese_roberta_L-2_H-512_relative_key_query_token_type_100')
  model = BertModel.from_pretrained("napoler/chinese_roberta_L-2_H-512_relative_key_query_token_type_100",config=Config)
  
  
  ```
  
  修改方案
  
  https://www.kaggle.com/terrychanorg/bert-notebook9525623d9e