Bug: Update design kit names

[aagonzales]

Recently the names of several design kits have been updated. We need to make sure the everywhere on the site where we mention a kit name is updated to match the new names in Figma.

Tasks

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1. Audit the site and kits to ensure parity
2. Open a PR with the changes
3. Update the Figma thumbnail

Name changes

• (v11) All themes - Carbon Design System updated to (v11) Carbon Design System
• Find others from audit task and list here

Locations on the website to check

• Designing/Design kits
• Designing/Other resources
• Find others places from audit task and list here