fix: use relative type path to nitro #internal/nitro

[danielroe]

🔗 Linked issue

#1560

❓ 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 like performance)
• ✨ 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

This uses relative path for #internal/nitro replacement in nitro-types.d.ts

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[codecov]

Codecov Report

Merging #1584 (a5b7a25) into main (b8b834f) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1584   +/-   ##
=======================================
  Coverage   76.23%   76.24%           
=======================================
  Files          76       76           
  Lines        7789     7791    +2     
  Branches      776      776           
=======================================
+ Hits         5938     5940    +2     
  Misses       1849     1849           
  Partials        2        2           

Files Changed	Coverage Δ
src/build.ts	84.23% <100.00%> (+0.05%)	⬆️

[misaon]

Nice work!