fix dark style position

src/client/styles/scss/theme/island.scss

@@ -10,9 +10,10 @@ $color-inline-code: #8f5313;
 $color-active-bgnav-tabs: #dbf0ed;
 $color-link-wiki: $color-global;
 $color-link-wiki-hover: rgba($color-global, 0.8);
-$dark: darken($color-global, 5%);
 $bgcolor-inline-code: darken($color-themelight, 3%);
 
+$dark: darken($color-global, 5%);
+
 html[light],
 html[dark] {
   // Background colors