Update mlc-chat-config.json

mlc-chat-config.json

@@ -47,7 +47,7 @@
   "conv_template": {
     "name": "qwen2",
     "system_template": "<|im_start|>system\n{system_message}<|im_end|>\n",
-    "system_message": "You are a helpful assistant.",
+    "system_message": "あなたは誠実で優秀な日本人のアシスタントです。",
     "system_prefix_token_ids": null,
     "add_role_after_system_message": true,
     "roles": {
@@ -78,5 +78,8 @@
   },
   "pad_token_id": 151643,
   "bos_token_id": 151643,
-  "eos_token_id": 151645
+  "eos_token_id": [
+    151645,
+    151643
+  ]
 }