Add evaluation results on the samsum config of samsum

Beep boop, I am a bot from Hugging Face's automatic model evaluator 👋!\
Your model has been evaluated on the samsum config of the [samsum](https://huggingface.co/datasets/samsum) dataset by

@pszemraj

, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-staging-eval-project-samsum-22cb3f56-11055482).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=samsum).\
Evaluate your model on more datasets [here](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=samsum).

README.md

@@ -216,19 +216,19 @@ model-index:
     metrics:
     - name: ROUGE-1
       type: rouge
-      value: 32.0048
+      value: 32.0
       verified: true
     - name: ROUGE-2
       type: rouge
-      value: 10.0862
+      value: 10.0781
       verified: true
     - name: ROUGE-L
       type: rouge
-      value: 23.6564
+      value: 23.6331
       verified: true
     - name: ROUGE-LSUM
       type: rouge
-      value: 28.8011
+      value: 28.7831
       verified: true
     - name: loss
       type: loss