docs: Add missing Next.js + Drizzle ORM template to serverless drivers

# Improve documentation ## Link https://github.com/supabase/supabase/blob/master/apps/docs/content/guides/database/connecting-to-postgres/serverless-drivers.mdx ## Describe the problem In the `serverless-drivers.mdx` documentation (around line 29), there is a commented-out section with a `TODO` to link the Next.js template that uses Drizzle ORM: ```tsx /* { TODO: Link the correct next.js template that uses drizzle ORM with supabase database. hasLightIcon: true, href: 'https://supabase.link/nextjs-supabase-drizzle', description: "Simple Next.js template that uses Supabase as the database and Drizzle as the ORM.", },*/ ``` It appears that the template link had not been fully verified at the time, so the configuration was left commented out pending confirmation of the correct template URL. ## Describe the improvement Drizzle ORM is becoming very popular in the Next.js + Supabase stack. We should find the correct, working Drizzle template link and uncomment this block so developers can easily discover it in the documentation. ## Additional context I have already forked the repository locally and I am ready to fix this. Is it okay if I take this issue and submit a Pull Request?