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

@@ -16,18 +16,21 @@ model-index:
       config: plain_text
       split: validation
     metrics:
-    - name: Loss
-      type: loss
+    - type: loss
       value: 1.073493242263794
+      name: Loss
       verified: true
-    - name: Exact Match
-      type: exact_match
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiN2JhYTZkMmE0MmZiYmMxMmNlYzYzOGY0YTM1YzAwMWE4Zjg1OGQyMmFiNDk1MTRmNTgyOGI3MmI3MDg0YzE0MiIsInZlcnNpb24iOjF9.r65qcGEEIEedNu3jN_rdoD0PGKGtsq6_Sm86z0JMqdaRFeCouH10ILLh0q7rpvZR0xaxT5jDqU4INFpoWxaABg
+    - type: exact_match
       value: 80.0853
+      name: Exact Match
       verified: true
-    - name: F1
-      type: f1
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiNTNkNzA0MjU0YjlhZjMyMjgzMWJhNjVhMGMxNzNlNTdkYzc1ODg0YzExZDJkMmU3NjRkODQ2ZmVmOWM4OGJkNCIsInZlcnNpb24iOjF9.OlUDKItDSbtLPsxgzcNhAzk1EXTFZZ-nMRLgHQfLXh-kRWAOnitFSdIuYToG7R0X2gfhh2Nobf8FI5zKS-u0CQ
+    - type: f1
       value: 87.606
+      name: F1
       verified: true
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiZTY3YjZkMzk2MTE1NWEyY2VjZmJjOThlMThjNjljOGZmNjgyNzJlYmFhN2VlZGNiNTc5NWZjODAxYjk0MDcyOCIsInZlcnNpb24iOjF9.wadGVNZdvWj7RPyfA6xTUZUFeP0J_ySImxB4vFnKjDCsbT8gri9KrUgyjAn2t6_379UJljaqvvLI68z5Pp0sCg
 ---
 
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