Add multilingual to the language tag

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

README.md

@@ -1,19 +1,20 @@
 ---
-license: apache-2.0
 language:
 - tok
 - en
+- multilingual
+license: apache-2.0
 tags:
 - generated_from_trainer
 - translation
 metrics:
 - bleu
+widget:
+- text: toki! mi jan Ton. mi lon ma Tawan.
+- text: soweli li toki ala toki e toki Inli?
 model-index:
 - name: toki-en-mt
   results: []
-widget:
-- text: "toki! mi jan Ton. mi lon ma Tawan."
-- text: "soweli li toki ala toki e toki Inli?"
 ---
 
 <!-- This model card has been generated automatically according to the information the Trainer had access to. You