fix: cleanup env variables

apps/documentation/pages/developers/local-development/index.mdx

@@ -16,18 +16,16 @@ Pick the one that fits your needs the best.
 ## Tech Stack
 
 - [Typescript](https://www.typescriptlang.org/) - Language
-- [Next.js](https://nextjs.org/) - Framework
+- [ReactRouter](https://reactrouter.com/) - Framework
 - [Prisma](https://www.prisma.io/) - ORM
 - [Tailwind](https://tailwindcss.com/) - CSS
 - [shadcn/ui](https://ui.shadcn.com/) - Component Library
-- [NextAuth.js](https://next-auth.js.org/) - Authentication
 - [react-email](https://react.email/) - Email Templates
 - [tRPC](https://trpc.io/) - API
 - [@documenso/pdf-sign](https://www.npmjs.com/package/@documenso/pdf-sign) - PDF Signatures
 - [React-PDF](https://github.com/wojtekmaj/react-pdf) - Viewing PDFs
 - [PDF-Lib](https://github.com/Hopding/pdf-lib) - PDF manipulation
 - [Stripe](https://stripe.com/) - Payments
-- [Vercel](https://vercel.com) - Hosting
 
 <div className="mt-16 flex items-center justify-center gap-4">
   <a href="https://documen.so/discord">