Use Twind v1

[kLiHz]

The story is that I was trying to add some dark mode support to Deno by Example. However it seems that the dark: variants (according to Twind documentation) isn't working, although the attribute did show up in the resulting HTML.

Luckily I noticed the title "Using Twind v1" in Fresh docs. After applying instructions said there, the dark: attributes is working as expected.