docs(docs): remove duplicate @types/node installation steps

[lukpod1]

What changed and why

Removed redundant @types/node installation commands in database quickstart guides. This. ensure the documentation is concise and avoids repeating installation steps that are already covered in the same block.

How it was tested (commands + notes)

Verified the changes by running the local documentation server (pnpm --filter docs dev) and checking the affected .mdx files to ensure the installation blocks are rendered correctly.

Issue Reference

Issue: #7541

Summary by CodeRabbit

• Documentation
  • Updated installation instructions across multiple database setup guides (PostgreSQL, PlanetScale, and CockroachDB) to remove an unnecessary development dependency. This streamlines the setup process for new Prisma projects across different database providers, reducing the total number of packages developers need to install during initial project setup and simplifying their configuration process.

[vercel]

@lukpod1 is attempting to deploy a commit to the Prisma Team on Vercel.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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Walkthrough

This PR removes @types/node from npm install commands across five Prisma documentation files for various database setup guides (PlanetScale, CockroachDB, PostgreSQL). The changes are consistent and identical in pattern across all affected files.

Changes

Cohort / File(s)	Summary
Prisma Database Quickstart Documentation apps/docs/content/docs/(index)/prisma-orm/quickstart/cockroachdb.mdx, apps/docs/content/docs/(index)/prisma-orm/quickstart/planetscale.mdx, apps/docs/content/docs/(index)/prisma-orm/quickstart/postgresql.mdx, apps/docs/content/docs/(index)/prisma-orm/quickstart/prisma-postgres.mdx	Removed @types/node from dev dependency installation commands in npm install steps.
Prisma Add-to-Existing-Project Documentation apps/docs/content/docs/(index)/prisma-orm/add-to-existing-project/planetscale.mdx	Removed @types/node from dependency installation command in the Postgres section.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related issues

• Docs: remove duplicate @types/node installation steps in DB quickstarts #7541: This PR directly addresses the proposal to eliminate redundant @types/node installation steps from Prisma database quickstart documentation, implementing the exact removals suggested in the issue.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main change across all modified files—removing redundant @types/node installations from documentation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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