Update README.md

README.md

@@ -23,6 +23,16 @@ model-index:
           - type: wikitext
             value: 19.31
             name: Perplexity
+      - task:
+          type: text-generation
+          name: Text generation
+        dataset:
+          name: WikiText-2
+          type: wikitext
+        metrics:
+          - type: wikitext
+            value: 17.151
+            name: Perplexity
 ---
 
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