Add multilingual to the language tag

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

README.md

@@ -1,14 +1,13 @@
-
 ---
 language:
 - en
 - de
-thumbnail:
+- multilingual
+license: apache-2.0
 tags:
 - translation
 - wmt16
 - allenai
-license: apache-2.0
 datasets:
 - wmt16
 metrics:
@@ -44,7 +43,7 @@ input = "Machine learning is great, isn't it?"
 input_ids = tokenizer.encode(input, return_tensors="pt")
 outputs = model.generate(input_ids)
 decoded = tokenizer.decode(outputs[0], skip_special_tokens=True)
-print(decoded) # Maschinelles Lernen ist großartig, nicht wahr?
+print(decoded) # Maschinelles Lernen ist gro�artig, nicht wahr?
 
 ```