Add evaluation results on the kmfoda--booksum config and test split of kmfoda/booksum

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Your model has been evaluated on the kmfoda--booksum config and test split of the [kmfoda/booksum](https://huggingface.co/datasets/kmfoda/booksum) dataset by

@pszemraj
, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-eval-kmfoda__booksum-kmfoda__booksum-29029e-2376274530).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=kmfoda/booksum).\
Evaluate your model on more datasets [here](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=kmfoda/booksum).

README.md

@@ -78,6 +78,39 @@ model-index:
       type: gen_len
       value: 186.2003
       verified: true
+  - task:
+      type: summarization
+      name: Summarization
+    dataset:
+      name: kmfoda/booksum
+      type: kmfoda/booksum
+      config: kmfoda--booksum
+      split: test
+    metrics:
+    - name: ROUGE-1
+      type: rouge
+      value: 15.24
+      verified: true
+    - name: ROUGE-2
+      type: rouge
+      value: 1.0121
+      verified: true
+    - name: ROUGE-L
+      type: rouge
+      value: 10.6817
+      verified: true
+    - name: ROUGE-LSUM
+      type: rouge
+      value: 14.3223
+      verified: true
+    - name: loss
+      type: loss
+      value: 7.293437480926514
+      verified: true
+    - name: gen_len
+      type: gen_len
+      value: 198.4067
+      verified: true
 ---
 
 # BigBirdPegasus model (large)