Docs: Update roadmap

[Olexandr88]

Made some additions and changes to the documentation

Why?

Clear and short explanation here.

How?

• Done A (replace with a breakdown of the steps)
• Done B
• Done C

Tickets?

• Ticket 1
• Ticket 2
• Ticket 3

Contribution checklist?

• The commit messages are detailed
• The build command runs locally
• Assets or static content is linked and stored in the project
• Document filename is named after the slug
• You've reviewed spelling using a grammar checker
• For guides or references, you've tested the commands and steps
• You've done enough research before writing

Security checklist?

• Injection has been prevented (parameterized queries, no eval or system calls)
• The UI is escaping output (to prevent XSS)
• Sensitive data has been identified and is being protected properly

References?

Optionally, provide references such as links

Preview?

Optionally, provide the preview url here

[Olexandr88]

Hello, there is a typo in the text, i.e. duplication of a word. Thank you