Add multilingual to the language tag

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

README.md

@@ -2,19 +2,24 @@
 language:
 - nl
 - en
-datasets:
-- yhavinga/mc4_nl_cleaned
-- yhavinga/ccmatrix
+- multilingual
+license: apache-2.0
 tags:
 - byt5
 - translation
 - seq2seq
-
+datasets:
+- yhavinga/mc4_nl_cleaned
+- yhavinga/ccmatrix
 pipeline_tag: translation
 widget:
-- text: "It is a painful and tragic spectacle that rises before me: I have drawn back the curtain from the rottenness of man. This word, in my mouth, is at least free from one suspicion: that it involves a moral accusation against humanity."
-- text: "Young Wehling was hunched in his chair, his head in his hand. He was so rumpled, so still and colorless as to be virtually invisible. His camouflage was perfect, since the waiting room had a disorderly and demoralized air, too. Chairs and ashtrays had been moved away from the walls. The floor was paved with spattered dropcloths."
-license: apache-2.0
+- text: 'It is a painful and tragic spectacle that rises before me: I have drawn back
+    the curtain from the rottenness of man. This word, in my mouth, is at least free
+    from one suspicion: that it involves a moral accusation against humanity.'
+- text: Young Wehling was hunched in his chair, his head in his hand. He was so rumpled,
+    so still and colorless as to be virtually invisible. His camouflage was perfect,
+    since the waiting room had a disorderly and demoralized air, too. Chairs and ashtrays
+    had been moved away from the walls. The floor was paved with spattered dropcloths.
 ---