feat(finance): transform to standalone modular functions - #4073

Changed pages include:

• index.html - view
• 404.html - view
• api/index.html - view
• guide/index.html - view
• about/announcements.html - view
• about/roadmap/index.html - view
• about/team.html - view
• api/airline.html - view
• api/animal.html - view
• api/book.html - view

There are more changes not included in the list