Add evaluation results on the plain_text config of squad

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Your model has been evaluated on the plain_text config of the [squad](https://huggingface.co/datasets/squad) dataset by

@lewtun
, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-staging-eval-project-c230b859-684d-4c33-ba1d-1f5cafa82377-327627).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=squad).\
Evaluate your model on more datasets [here](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=squad).

README.md

@@ -6,7 +6,20 @@ datasets:
 - squad
 model-index:
 - name: extractive-question-answering
-  results: []
+  results:
+  - task:
+      type: question-answering
+      name: Question Answering
+    dataset:
+      name: squad
+      type: squad
+      config: plain_text
+      split: validation
+    metrics:
+    - name: Loss
+      type: loss
+      value: 1.2471383810043335
+      verified: true
 ---
 
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