tokenizer_config.json: use <|im_end|> as eos_token.

tokenizer_config.json

@@ -149,7 +149,7 @@
   ],
   "bos_token": "[BOS]",
   "clean_up_tokenization_spaces": false,
-  "eos_token": "[EOS]",
+  "eos_token": "<|im_end|>",
   "extra_special_tokens": {},
   "chat_template": "{% if tools -%}\n    {{ '<|im_system|>tool_declare<|im_middle|>' -}}\n    {{- tools | tojson -}}\n    {{ '<|im_end|>' -}}\n{%- endif -%}\n\n{%- for message in messages -%}\n  {%- if loop.first and messages[0]['role'] != 'system' -%}\n    {{ '<|im_system|>system<|im_middle|>You are a helpful assistant<|im_end|>' }}\n  {%- endif -%}\n  {%- if message['role'] == 'system' -%}\n    {{ '<|im_system|>system<|im_middle|>' }}\n  {%- elif message['role'] == 'user' -%}\n    {{ '<|im_user|>user<|im_middle|>' }}\n  {%- elif message['role'] == 'assistant' -%}\n    {{ '<|im_assistant|>assistant<|im_middle|>' }}\n  {%- elif message['role'] == 'tool' -%}\n    {{ '<|im_system|>tool<|im_middle|>' }}\n  {%- endif -%}\n\n  {%- if message['content'] is string -%}\n    {{- message['content'] + '<|im_end|>' -}}\n  {%- else -%}\n    {%- for content in message['content'] -%}\n      {%- if content['type'] == 'image' or 'image' in content or 'image_url' in content -%}\n        {{ '<|media_start|>image<|media_content|><|media_pad|><|media_end|>' }}\n      {%- else -%}\n        {{ content['text'] }}\n      {%- endif -%}\n    {%- endfor -%}\n    {{ '<|im_end|>' }}\n  {%- endif -%}\n{%- endfor -%}\n\n{%- if add_generation_prompt -%}\n  {{ '<|im_assistant|>assistant<|im_middle|>' }}\n{%- endif -%}",
   "model_max_length": 1000000000000000019884624838656,