docs: add proper command to create tailwind.config.js for pnpm

[derecklhw]

🔗 Linked issue

Resolves #911

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

With pnpm as package manager, the command pnpm dlx tailwindcss init will create a tailwind.config.js, solving the user frustration with err sh: 1: tailwind: not found

[netlify]

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Name	Link
🔨 Latest commit	266bc8e

[what-the-diff]

PR Summary

• Improved code formatting
  An unnecessary empty line was removed to keep the code clean and easy to read.

• Enhanced code block organization
  The code block section was updated to use ::code-group feature. This makes grouping related code blocks together easier and more organized.

• Introduced a special code block for specific task
  A new code block was added, specifically written for pnpm, intending to initiate the Tailwind CSS configuration. This will allow developers using pnpm to easily set up Tailwind CSS.

• Enhanced readability of command sections
  Formatting of bash command sections was changed to help users differentiate between npm/yarn and pnpm usage. This makes it more straightforward for individuals to understand which command to use based on their preferred package manager. This minor adjustment will improve the usability of these sections for developers.

[ineshbose]

Thank you! ❤️