docs: update org name in heading

I missed this during the previous update of the org name.

README.md

@@ -2500,7 +2500,7 @@ model-index:
       value: 77.29311047696697
 ---
 
-# danbev/bge-small-en-v1.5-Q8_0-GGUF
+# ggml-org/bge-small-en-v1.5-Q8_0-GGUF
 This model was converted to GGUF format from [`BAAI/bge-small-en-v1.5`](https://huggingface.co/BAAI/bge-small-en-v1.5) using llama.cpp via the ggml.ai's [GGUF-my-repo](https://huggingface.co/spaces/ggml-org/gguf-my-repo) space.
 Refer to the [original model card](https://huggingface.co/BAAI/bge-small-en-v1.5) for more details on the model.