update model card README.md

README.md

@@ -12,7 +12,7 @@ should probably proofread and complete it, then remove this comment. -->
 
 # bert-base-climate-fever-fixed
 
-This model is a fine-tuned version of [bert-base-uncased](https://huggingface.co/bert-base-uncased) on an unknown dataset.
+This model is a fine-tuned version of [bert-base-uncased](https://huggingface.co/bert-base-uncased) on the None dataset.
 
 ## Model description