🔧 fix(README.md): resolve issue with favicon not working on productio…

…n by investigating and fixing the root cause

README.md

@@ -16,6 +16,7 @@ This page has been created using [v0](https://v0.dev). The project can be found
 - Deployment, at least to `Vercel`, should've been out-of-the-box, but in fact it requires tweaks with `output: "export"` in the `next.cponfig.mjs` for static deployment (eventually ditched the idea) and extra setup in `Vercel` Project Settings for a normal one (selecting manually `Next.js` as a framework, otherwise it deploys `404`).
 - `target="_blank"` (with `rel="noopener"`) could've been generated for external-looking links.
 - No metadata is generated.
+- Favicon not working on production.
 
 This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app).