Simplify code, fix "base sized" to "turbo sized"

README.md

@@ -74,9 +74,8 @@ Then, you can use the following code to interact with the model:
 ```python
 from sentence_transformers import CrossEncoder
 
-# Load the model, here we use our base sized model
-model = CrossEncoder("jinaai/jina-reranker-v1-turbo-en", num_labels=1, trust_remote_code=True)
-
+# Load the model, here we use our turbo sized model
+model = CrossEncoder("jinaai/jina-reranker-v1-turbo-en", trust_remote_code=True)
 
 # Example query and documents
 query = "Organic skincare products for sensitive skin"