Migrate model card from transformers-repo

Read announcement at https://discuss.huggingface.co/t/announcement-all-model-cards-will-be-migrated-to-hf-co-model-repos/2755
Original file history: https://github.com/huggingface/transformers/commits/master/model_cards/aliosm/ComVE-gpt2-medium/README.md

README.md

@@ -54,9 +54,6 @@ The model trained on Nvidia Tesla P100 GPU from Google Colab platform with 5e-5
 The model achieved fifth place with 16.7153/16.1187 BLEU scores and third place with 1.94 Human Evaluation score on SemEval2020 Task4: Commonsense Validation and Explanation development and testing dataset.
 
 These are some examples generated by the model:
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 |             Against Commonsense Statement             |               Generated Reason               |
 |:-----------------------------------------------------:|:--------------------------------------------:|
 | Chicken can swim in water.                            | Chicken can't swim.                          |
@@ -70,8 +67,6 @@ These are some examples generated by the model:
 | cars can float in the ocean just like a boat          | Cars are too heavy to float in the ocean.    |
 | I am going to work so I can lose money.               | Working is not a way to lose money.          |
 
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 ### BibTeX entry and citation info
 
 ```bibtex
@@ -83,5 +78,5 @@ These are some examples generated by the model:
 ```
 
 <a href="https://huggingface.co/exbert/?model=aliosm/ComVE-gpt2-medium">
-	<img width="300px" src="https://hf-dinosaur.huggingface.co/exbert/button.png">
-</a>
+	<img width="300px" src="https://cdn-media.huggingface.co/exbert/button.png">
+</a>