Several documentation improvements

[aaitor]

• chore: upgrading docusaurus to v3.6.3
• fix: better documentation about dynamic credits
• fix: images about dynamic credits
• fix: adapting to payments v0.8.0
• fix: removing Edit link
• fix: update environments
• fix: faq environments
• fix: updating login screenshot
• feat: add DID doc
• fix: widget now loads correctly
• fix: comments

Description

Add a description of your changes here.

Is this PR related with an open issue?

Related to Issue #

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)

Checklist:

• Follows the code style of this project.
• Tests Cover Changes
• Documentation