Update index.mdx (#834)

## Summary by Sourcery

Refine the help section in the documentation by restructuring the
layout, removing the community Discord link, and updating the demo
scheduling URL.

Documentation:
- Restructure the 'Need help?' section in index.mdx by adding consistent
headings and spacing
- Remove the Discord community link
- Update the demo scheduling link to point to the regional booking URL

Author: SaeeDawod

content/docs/index.mdx

@@ -813,6 +813,7 @@ SettleMint Application Kits provide complete, full-stack blockchain solutions fo
   </Accordion>
 </Accordions>
 
+
 ## Need help?
 
 - 📧 **Support:** [support@settlemint.com](mailto:support@settlemint.com)