Fix a snippet

README.md

@@ -114,7 +114,7 @@ Finally, if you want to extract individula vectors, you can use the model this w
 ```python
 from colbert.modeling.checkpoint import Checkpoint
 
-ckpt = Checkpoint(answerdotai/answerai-colbert-small-v1", colbert_config=ColBERTConfig())
+ckpt = Checkpoint("answerdotai/answerai-colbert-small-v1", colbert_config=ColBERTConfig())
 embedded_query = ckpt.queryFromText(["Who dubs Howl's in English?"], bsize=16)
 ```