fix[close #2]: switch to modern scss api

Author: GabsEdits

docs/.vitepress/config.mts

@@ -133,6 +133,7 @@ export default defineConfig({
     css: {
       preprocessorOptions: {
         scss: {
+          api: 'modern-compiler',
           additionalData: `
             $color-accent: ${info.accentColor};
             $bg-color-code-l: #ffffff;