Fix CSS and asset paths in index.html

[daveylupes]

Fix incorrect relative paths in index.html that prevented CSS and assets from loading correctly.

Issue:
The index.html file is located in the assist/ directory, so all asset paths should be relative to that directory, not include the assist/ prefix.

Testing:
Paths are now correctly relative to the assist directory where index.html is located.

[vercel]

@daveylupes is attempting to deploy a commit to the Supra Team on Vercel.

A member of the Team first needs to authorize it.

[daveylupes]

Hi @supra-bharatjain, I noticed that the asset paths in index.html were currently broken because they included the /assist prefix despite the file already living in that directory.

This fix ensures that CSS and JS load correctly for users out of the box. I've tested this locally to verify the assets now render as expected. Would appreciate a review when you have a moment!