Fix typo in ROUGE metrics

This PR fixes typos in the ROUGE metrics, replacing "rogue" with "rouge"

README.md

@@ -18,23 +18,23 @@ model-index:
       name: "SAMSum Corpus: A Human-annotated Dialogue Dataset for Abstractive Summarization" 
       type: samsum
     metrics:
-       - name: Validation ROGUE-1
-         type: rogue-1
+       - name: Validation ROUGE-1
+         type: rouge-1
          value: 43.2111
-       - name: Validation ROGUE-2
-         type: rogue-2
+       - name: Validation ROUGE-2
+         type: rouge-2
          value: 22.3519
-       - name: Validation ROGUE-L
-         type: rogue-l
+       - name: Validation ROUGE-L
+         type: rouge-l
          value: 33.315
-       - name: Test ROGUE-1
-         type: rogue-1
+       - name: Test ROUGE-1
+         type: rouge-1
          value: 41.8283
-       - name: Test ROGUE-2
-         type: rogue-2
+       - name: Test ROUGE-2
+         type: rouge-2
          value: 20.9857
-       - name: Test ROGUE-L
-         type: rogue-l
+       - name: Test ROUGE-L
+         type: rouge-l
          value: 32.3602
 widget:
 - text: |