Update icon for docs

Author: ajhai

web/docusaurus.config.js

@@ -8,7 +8,7 @@ const darkCodeTheme = require("prism-react-renderer/themes/dracula");
 const config = {
   title: "LLMStack",
   tagline: "AI Apps and Chatbots in Minutes | No-code AI App Builder",
-  favicon: "img/icon.png",
+  favicon: "img/llmstack-icon.png",
 
   // Set the production url of your site here
   url: "https://llmstack.ai",