Fix typo in ROUGE metrics

This PR fixes a small typo in the ROUGE metrics, replacing "rogue" with "rouge"

README.md

@@ -23,23 +23,23 @@ 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: 54.3921
-    - name: Validation ROGUE-2
-      type: rogue-2
+    - name: Validation ROUGE-2
+      type: rouge-2
       value: 29.8078
-    - name: Validation ROGUE-L
-      type: rogue-l
+    - name: Validation ROUGE-L
+      type: rouge-l
       value: 45.1543
-    - name: Test ROGUE-1
-      type: rogue-1
+    - name: Test ROUGE-1
+      type: rouge-1
       value: 53.3059
-    - name: Test ROGUE-2
-      type: rogue-2
+    - name: Test ROUGE-2
+      type: rouge-2
       value: 28.355
-    - name: Test ROGUE-L
-      type: rogue-l
+    - name: Test ROUGE-L
+      type: rouge-l
       value: 44.0953
   - task:
       type: summarization