Fix 404 link to CNCF TAG App Delivery charter (charter.md)

[yada]

Broken link (404)

• URL: https://tag-app-delivery.cncf.io/wgs/app-development/charter/charter.md/
• HTTP status: 404
• Found on: https://microcks.io/blog/microcks-1.10.0-release/

What to do

• Replace with the current canonical URL for the charter (site structure may have changed).
• Ensure the replacement link is public and stable.

Help needed

If you can’t find the updated charter URL, comment here and we’ll help identify the correct destination.