Clean up the main docs page

[sfshaza2]

Addresses the issue raised by this PR: #12876

[gemini-code-assist]

Summary of Changes

Hello @sfshaza2, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the main documentation page by simplifying the 'New to Flutter?' section. It replaces a detailed, multi-step introduction with a single, clear link to a dedicated 'learn Flutter' page. This change aims to provide a more direct and less overwhelming onboarding experience for new users, making it easier for them to find essential resources.

Highlights

• Documentation Simplification: The 'New to Flutter?' section on the main documentation page has been significantly simplified, replacing a multi-step guide with a single, direct link.
• Improved Onboarding Flow: New users are now directed to a consolidated 'learn Flutter' page, streamlining their initial learning path and improving content discoverability.
• Code Cleanup: An unused link definition, [Set up Flutter], has been removed from the index.md file, contributing to cleaner code.

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[gemini-code-assist]

Code Review

This pull request simplifies the main documentation page by consolidating getting-started information onto a new 'learn Flutter' page. The changes are a good step towards improving the structure of the documentation. I've left one suggestion to ensure that the crucial 'environment setup' step remains prominent for new users, as it seems to have been lost in the refactoring. Otherwise, the changes look good.

[flutter-website-bot]

Visit the preview URL for this PR (updated for commit 6621ed6):

https://flutter-docs-prod--pr12886-main-docs-pg-1ypxifli.web.app