update model card

README.md

@@ -12,12 +12,12 @@ model-index:
   - task:
       type: summarization
     dataset:
-      name: Summarization (arXiv)
+      name: arxiv-summarization
       type: ccdv/arxiv-summarization
       split: validation
     metrics:
     - type: rouge1
-      value: 32.46586711248332
+      value: 31.80386798031258
 ---
 
 # Model Card for Model ID