:wrench: upgrade openai-proxy settings

deploy/roles/mint-v2.1/templates/v2/openai-proxy.json.j2

@@ -1,5 +1,5 @@
 { 
     "port": 8080,
     "debug": false, 
-    "api-server": "{{ app_api_server }}" 
+    "api-url": "{{ app_api_server }}/api" 
 }