revert change to prompt template

.env.local.template

@@ -23,7 +23,7 @@ OPENID_PROVIDER_URL=https://huggingface.co # for Google, use https://accounts.go
 MODELS=`[
   {
     "name": "${MODEL_NAME}",
-    "chatPromptTemplate": "<|system|>\n{{preprompt}}</s>\n{{#each messages}}{{#ifUser}}<|user|>\n{{content}}</s>\n{{/ifUser}}{{#ifAssistant}}<|assistant|>\n{{content}}</s>\n{{/ifAssistant}}{{/each}}",
+    "chatPromptTemplate": "${MODEL_PROMPT_TEMPLATE}",
     "preprompt": "",
     "promptExamples": [
       {