diff --git a/README.md b/README.md
index 705363f..a9b6a85 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ operation, which scales quadratically with the sequence length. To address this
 we introduce the Longformer with an attention mechanism that scales linearly with sequence
 length, making it easy to process documents of thousands of tokens or longer[2].
 
-## Reference
+### References
 
 [1].https://huggingface.co/docs/transformers/v4.16.2/en/model_doc/longformer#transformers.LongformerConfig
 
@@ -34,7 +34,7 @@ from towhee import dc
 
 
 dc.stream(["Hello, world."])
-  .text_embedding.longformer(model_name="allenai/longformer-base-4096")
+  .text_embedding.longformer(model_name=c"allenai/longformer-base-4096")
   .show()
 ```