Make clear the requirement of the [cli] dependency group for the schema exporter

[shaggyz]

Description

Make clear the requirement of the [cli] dependency group when running the schema exporter to avoid import module errors.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Documentation

Issues Fixed or Closed by This PR

Not closed, but related to: #3056

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

Summary by Sourcery

Documentation:

• Clarify the requirement of installing the [cli] dependency group for using the schema exporter command line tools.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR updates the schema export documentation to clarify that the CLI dependency group is required for using the schema exporter functionality. The change is straightforward, adding a single informative line to the existing documentation.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added a note about CLI dependency requirement in schema export documentation	Added clarification that strawberry-graphql[cli] installation is required for using command line tools	docs/guides/schema-export.md

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[sourcery-ai]

Hey @shaggyz - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[sourcery-ai]

suggestion: Consider adding the specific pip install command for clarity

It would be helpful to include the actual pip install command (e.g., pip install 'strawberry-graphql[cli]') to make it even easier for users to get started.

Suggested change

	To use the command line tools, you have to ensure Strawberry was installed with `strawberry-graphql[cli]`.
	To use the command line tools, you have to ensure Strawberry was installed with the CLI extras:
	```bash
	pip install 'strawberry-graphql[cli]'

[patrick91]

Thanks!

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