Add evaluation results on the plain_text config and validation split of launch/gov_report

Beep boop, I am a bot from Hugging Face's automatic model evaluator 👋!\
Your model has been evaluated on the plain_text config and validation split of the [launch/gov_report](https://huggingface.co/datasets/launch/gov_report) dataset by @nonchalant-nagavalli, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-staging-eval-launch__gov_report-plain_text-cd8e90-16116209).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=launch/gov_report).\
Evaluate your model on more datasets [here](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=launch/gov_report).

README.md

@@ -383,6 +383,39 @@ model-index:
       type: gen_len
       value: 132.7475
       verified: true
+  - task:
+      type: summarization
+      name: Summarization
+    dataset:
+      name: launch/gov_report
+      type: launch/gov_report
+      config: plain_text
+      split: validation
+    metrics:
+    - name: ROUGE-1
+      type: rouge
+      value: 37.9246
+      verified: true
+    - name: ROUGE-2
+      type: rouge
+      value: 8.5837
+      verified: true
+    - name: ROUGE-L
+      type: rouge
+      value: 18.0274
+      verified: true
+    - name: ROUGE-LSUM
+      type: rouge
+      value: 34.0816
+      verified: true
+    - name: loss
+      type: loss
+      value: 2.56695818901062
+      verified: true
+    - name: gen_len
+      type: gen_len
+      value: 220.3747
+      verified: true
 ---
 
 # long-t5-tglobal-base-16384 + BookSum