Update README Structure

[BijanProgrammer]

• Added syntax highlighting and prettier support to code blocks.
• Updated structure of configuration options and integration section.
• Updated package version in CDN section and package-lock.json.
• Fixed roadmap's checkboxes.
• Fixed typo and grammar issues.

[Onatcer]

thank you for the pr; please don't update the package-lock.json. if you revert the changes I'll merge it

[BijanProgrammer]

Yes of course. Will do.

[Onatcer]

ty!