(docs) passing user config

docs/my-website/docs/proxy/user_keys.md

@@ -382,7 +382,7 @@ async function main() {
   const chatCompletion = await openai.chat.completions.create({
     messages: [{ role: 'user', content: 'Say this is a test' }],
     model: 'gpt-3.5-turbo',
-    user_config: userConfig // 👈 User Key
+    user_config: userConfig // # 👈 User config
   });
 }