Fix for special_tokens_map as per upstream repo

special_tokens_map.json

@@ -6,6 +6,6 @@
     "<|end|>"
   ],
   "bos_token": "<|endoftext|>",
-  "eos_token": "<|endoftext|>",
+  "eos_token": "<|end|>",
   "unk_token": "<|endoftext|>"
-}
+}