feat: Format the code block for docusaurus

[hahuyhoang411]

Problem The code block works fine for others but for custom nitro, it won't render.

Success Criteria Colorize the nitro command on the docs.

Additional context image:

code tried (none of these work):

nitro 4 127.0.0.1 5000

nitro 4 127.0.0.1 5000