Updated contents to align with the restructured XM Cloud Foundation Head

[gkLeo]

Description / Motivation

Update the following pages to align with the restructured XM Cloud Foundation Head.
/learn/getting-started/xm-cloud/tutorials/create-a-site
/learn/accelerate/xm-cloud/appendix-ii/example-code/xmcloud-build-json
/learn/accelerate/xm-cloud/pre-development/developer-considerations/dev-workflow-codespaces
/learn/accelerate/xm-cloud/pre-development/project-architecture/rate-limits-and-caching

How Has This Been Tested?

Local.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update (non-breaking change; modified files are limited to the /data directory or other markdown files)

Checklist:

• I have read the Contributing guide.
• My code/comments/docs fully adhere to the Code of Conduct.
• My change is a code change.
• My change is a documentation change and there are NO other updates required.
• My change has new or updated images which are stored in the /public/images folder that need to be migrated to Sitecore DAM

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Name	Status	Preview	Comments	Updated (UTC)
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[vercel]

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