docs(swagger): add ui/raws description, hint

[mag123c]

PR Checklist

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• 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?

Currently, the Swagger documentation does not provide a clear explanation of how the ui and raw options work independently. Users might assume that disabling the Swagger UI (ui: false) also disables JSON/YAML documentation or vice versa.

Issue Number: N/A

What is the new behavior?

This PR is an document update for the changes below.

nestjs/swagger#3185
nestjs/swagger@675a027

• Added a new section under Setup options explaining how ui and raw interact.
• Provided an example configuration demonstrating a case where the UI is disabled but JSON definitions remain available.
• Clarified Swagger UI and JSON/YAML accessibility behavior when different combinations of ui and raw are used.
• Improved readability by structuring explanations in a more user-friendly way.

Does this PR introduce a breaking change?

• Yes
• No

[kamilmysliwiec]

LGTM