Update config.json

config.json

@@ -32,6 +32,6 @@
   "tokenizer_class": "NllbTokenizer",
   "max_length": 200,
   "task_specific_params":{
-    "translation": {"src_lang": "fr", "tgt_lang": "en"}
+    "translation_fr_to_en": {}
   }
 }