fix darkmode script load

quartz/styles/syntax.scss

@@ -14,7 +14,7 @@
 }
 
 // npx convert-sh-theme https://raw.githubusercontent.com/shikijs/shiki/main/packages/shiki/themes/github-dark.json
-:root[saved-theme="dark"] {
+[saved-theme="dark"] {
   --shiki-color-text: #e1e4e8 !important;
   --shiki-color-background: #24292e !important;
   --shiki-token-constant: #79b8ff !important;