Update README.md

[tomo484]

Fix: Correct env filename in Next.js example README

Description

This PR fixes a typo in the Next.js example setup instructions where .env.local should be .env-local to match the actual filename present in the repository.

Changes Made

• Fixed typo in examples/typescript/fullstack/next/README.md (line 13)
  • Changed .env.local to .env-local in setup instructions

Tests

TypeScript Tests

• ✅ Ran pnpm test from /typescript directory - All 185 tests passed
• ✅ Ran pnpm format from /typescript directory - All formatting checks passed
• ✅ Ran pnpm lint from /typescript directory - All linting checks passed
• ✅ Ran pnpm format && pnpm lint from /examples/typescript directory - All checks passed

Manual Verification

• ✅ Verified that .env-local file exists in the repository
• ✅ Confirmed that the setup instructions now correctly reference the existing file
• ✅ Tested that the corrected instructions work as expected

Checklist

• I have formatted and linted my code
• All new and existing tests pass
• My commits are signed (required for merge) -- you may need to rebase if you initially pushed unsigned commits