changed config files to phi-2 conv template

mlc-chat-config.json

@@ -44,16 +44,14 @@
     "strip_space_in_decode": false
   },
   "conv_template": {
-    "name": "gemma_instruction",
+    "name": "phi-2",
     "system_template": "{system_message}",
     "system_message": "",
-    "system_prefix_token_ids": [
-      2
-    ],
+    "system_prefix_token_ids": null,
     "add_role_after_system_message": true,
     "roles": {
-      "user": "<start_of_turn>user",
-      "assistant": "<start_of_turn>model"
+      "user": "Instruct",
+      "assistant": "Output"
     },
     "role_templates": {
       "user": "{user_message}",
@@ -62,16 +60,15 @@
     },
     "messages": [],
     "seps": [
-      "<end_of_turn>\n"
+      "\n"
     ],
-    "role_content_sep": "\n",
-    "role_empty_sep": "\n",
+    "role_content_sep": ": ",
+    "role_empty_sep": ":",
     "stop_str": [
-      "<end_of_turn>"
+      "<|endoftext|>"
     ],
     "stop_token_ids": [
-      1,
-      107
+      50256
     ],
     "function_string": "",
     "use_function_calling": false