docs: update Next.js installation doc

[iDevGon]

📝 Description

Hi! 👋🏻
Thank you for your great Library!

When creating a new project for Next.js by npx create-next-app@latest,
the initial code changed and I've updated the documentation accordingly.

⛳️ Current behavior (updates)

No Change

🚀 New behavior

No Change

💣 Is this a breaking change (Yes/No):

No

📝 Additional Information

[changeset-bot]

⚠️ No Changeset found

Latest commit: c55d30e

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