Update description templates screenshots

What does this MR do?

This MR updates the documentation to make it more exact, and updates the screenshots.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry for user-facing changes, or community contribution. Check the link for other scenarios.
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Performance and testing

No implications

Security

No code written. Just markdown.