Add multilingual to the language tag

Hi! A PR to add multilingual to the language tag to improve the referencing.

README.md

@@ -1,9 +1,4 @@
 ---
-tags:
-- summarization
-- mT5
-datasets:
-- csebuetnlp/xlsum
 language:
 - am
 - ar
@@ -48,6 +43,12 @@ language:
 - vi
 - cy
 - yo
+- multilingual
+tags:
+- summarization
+- mT5
+datasets:
+- csebuetnlp/xlsum
 licenses:
 - cc-by-nc-sa-4.0
 widget:
@@ -79,29 +80,29 @@ model-index:
       config: default
       split: test
     metrics:
-    - name: ROUGE-1
-      type: rouge
+    - type: rouge
       value: 36.5002
+      name: ROUGE-1
       verified: true
-    - name: ROUGE-2
-      type: rouge
+    - type: rouge
       value: 13.934
+      name: ROUGE-2
       verified: true
-    - name: ROUGE-L
-      type: rouge
+    - type: rouge
       value: 28.9876
+      name: ROUGE-L
       verified: true
-    - name: ROUGE-LSUM
-      type: rouge
+    - type: rouge
       value: 28.9958
+      name: ROUGE-LSUM
       verified: true
-    - name: loss
-      type: loss
+    - type: loss
       value: 2.0674800872802734
+      name: loss
       verified: true
-    - name: gen_len
-      type: gen_len
+    - type: gen_len
       value: 26.9733
+      name: gen_len
       verified: true
 ---