add MTEB shoutout

README.md

@@ -8645,7 +8645,7 @@ model-index:
 ---
 # Contextual Document Embeddings (CDE)
 
-Our new model that naturally integrates "context tokens" into the embedding process. 
+Our new model that naturally integrates "context tokens" into the embedding process. As of October 1st, 2024, `cde-small-v1` is the best small model (under 400M params) on the [MTEB leaderboard](https://huggingface.co/spaces/mteb/leaderboard) for text embedding models, with an average score of 65.00.
 
 # How to use `cde-small-v1`