Add verifyToken field to verify evaluation results are produced by Hugging Face's automatic model evaluator

Beep boop, I am a bot from Hugging Face's automatic model evaluator 👋! We've added a new `verifyToken` field to your evaluation results to verify that they are produced by the model evaluator. Accept this PR to ensure that your results remain listed as **verified** on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards).

README.md

@@ -24,18 +24,21 @@ model-index:
       config: ro-en
       split: test
     metrics:
-    - name: BLEU
-      type: bleu
+    - type: bleu
       value: 6.0012
+      name: BLEU
       verified: true
-    - name: loss
-      type: loss
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiMzAwOGM0NWI2ODYxNTcyOWZmZGYxMzZmM2RhZjYzZTc4ZDk4MTBkYzJiNjY3MjYxNDI3ZTBjYmY0Mzc4NGZhOCIsInZlcnNpb24iOjF9.kx434Ckp7xt_qfxxaJ2XTXJjUUDbNUCY-gRDCSe_FPeVec69Fap3NhL4u9hZioaNbTqpXxNwMHGRnkgjJ1jHAw
+    - type: loss
       value: 1.7407585382461548
+      name: loss
       verified: true
-    - name: gen_len
-      type: gen_len
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiNGRhMjYwYTY4YzNhNjQ0ZjlhM2IxMDQ1OWZjOWRmZjNhNGRhODc1NmE3Y2M4ODg3NzRjZWU2ZDU1MWZlZGUxNSIsInZlcnNpb24iOjF9.IHuQPWQp4xxuAOVvkmFdJQGa4uqBYq5_aS0uiK3uqTgfxSnxqFawLfgE2ou5RnRHFPiEQ4h5m_DDAjZBxBSLAA
+    - type: gen_len
       value: 18.2281
+      name: gen_len
       verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiY2ZiYTA5MzBkZDExY2FlNThjZDAxYmJiZjI2NjkzMDU2OTRjOGU1NjNiNjNmNGJkODk4MTg0YmI1Y2U5ZTY0YiIsInZlcnNpb24iOjF9.5XEsIvtfSnmnEvQg3GVVmVcURti_Jw3hSLQryeoAfgdLw6GEqKqIcu-WHsWnc6-9EDMfLQahrQneNlKpe8xDDw
 ---
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