[Automated] Update base model metadata

Set base model to "sentence-transformers/distilbert-base-nli-stsb-mean-tokens"

README.md

@@ -1,5 +1,6 @@
 ---
-library_name: "transformers.js"
+base_model: sentence-transformers/distilbert-base-nli-stsb-mean-tokens
+library_name: transformers.js
 ---
 
 https://huggingface.co/sentence-transformers/distilbert-base-nli-stsb-mean-tokens with ONNX weights to be compatible with Transformers.js.