Update tokenizer_config.json

tokenizer_config.json

@@ -2058,6 +2058,6 @@
     "attention_mask"
   ],
   "model_max_length": 131072,
-  "pad_token": "<|end_of_text|>",
+  "pad_token": "<|im_end|>",
   "tokenizer_class": "PreTrainedTokenizerFast"
 }