docs(prisma-recipe): add note about custom Prisma client output path …

[cookieMonsterDev]

…and build config

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/docs.nestjs.com/blob/master/CONTRIBUTING.md

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Docs
• Other... Please describe:

What is the current behavior?

There is no documentation explaining how to set a custom Prisma client output path or how to ensure it's included in the NestJS build process.

Issue Number: N/A

What is the new behavior?

Adds documentation explaining:

• How to configure a custom output path for the Prisma client.
• How to ensure the generated client is included in the NestJS build by updating tsconfig.build.json

Does this PR introduce a breaking change?

• Yes
• No

Other information