fix: banner highlighting issue

[epoll31]

Description

I fixed the code highlighting issue by changing the banner docs page from tsx to mdx.

Related Issue

Fixes #253

Proposed Changes

• banner/page.mdx -> banner/page.tsx

Checklist

Please check the boxes that apply:

• [x] I have rebased my branch on top of the latest main branch.
• [x] I have tested the changes locally
• [x] I ran npm run build and build is successful
• [x] I have added necessary documentation (if applicable)
• [x] I have updated the credits.md file (if applicable)

Additional Context

Without #251, the banner still does not hide properly.

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Name	Status	Preview	Comments	Updated (UTC)
syntax-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 7, 2024 0:51am

[Ansub]

fixed in https://github.com/SyntaxUI/syntaxui/pull/254