Update README.md

Update following Rare Species data adjustment, consistent with Rare Species dataset as published (https://doi.org/10.57967/hf/1511).

README.md

@@ -33,7 +33,7 @@ This modelcard has been generated using [this raw template](https://github.com/h
 
 BioCLIP is a foundation model for the tree of life, built using CLIP architecture as a vision model for general organismal biology. 
 It is trained on [TreeOfLife-10M](https://huggingface.co/datasets/imageomics/TreeOfLife-10M), our specially-created dataset covering over 450K taxa--the most biologically diverse ML-ready dataset available to date. 
-Through rigorous benchmarking on a diverse set of fine-grained biological classification tasks, BioCLIP consistently outperformed existing baselines by 17% to 20% absolute. 
+Through rigorous benchmarking on a diverse set of fine-grained biological classification tasks, BioCLIP consistently outperformed existing baselines by 16% to 17% absolute. 
 Through intrinsic evaluation, we found that BioCLIP learned a hierarchical representation aligned to the tree of life, which demonstrates its potential for robust generalizability.
 
 **See the `examples/` directory for examples of how to use BioCLIP in zero-shot and few-shot settings.**