docs(graphql): update installation command

[CatsMiaow]

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?

Because @as-integrations/express5 isn’t listed as a dependency of the @nestjs/apollo package, you’ll get an error unless you install it separately.

https://github.com/nestjs/graphql/blob/89d2d29baaed140bd82e9e32cd91957396461444/packages/apollo/package.json#L40-L55

• Support Apollo v5 graphql#3669

[Nest] 40751  - 10/27/2025, 2:45:53 PM   ERROR [PackageLoader] The "@as-integrations/express5" package is missing. Please, make sure to install it to take advantage of GraphQLModule.

What is the new behavior?

Add @as-integrations/express5 installation to the For Express and Apollo (default) guide.

• https://docs.nestjs.com/graphql/quick-start#installation

Does this PR introduce a breaking change?

• Yes
• No

Other information

Or would it be correct to add it as a dependency of the @nestjs/apollo package instead?

[Copilot]

Pull Request Overview

This PR updates the GraphQL installation documentation to include the @as-integrations/express5 package, which is required but not listed as a dependency of @nestjs/apollo. Without this package, users encounter a runtime error when attempting to use the GraphQL module with Express.

Key Changes:

• Added @as-integrations/express5 to the Express/Apollo installation command

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[kamilmysliwiec]

lgtm