Change hljs theme to one with better contrast

Author: TimWolla

source/_layouts/default.html

@@ -15,7 +15,7 @@
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap" rel="stylesheet">
     <script src="//unpkg.com/alpinejs" defer></script>
-    <link rel="stylesheet" href="//unpkg.com/@highlightjs/[email protected]/styles/base16/darcula.min.css">
+    <link rel="stylesheet" href="//unpkg.com/@highlightjs/[email protected]/styles/base16/danqing.min.css">
     <script src="//unpkg.com/@highlightjs/[email protected]/highlight.min.js"></script>
 
     <meta name="yandex-verification" content="6990192232fdf071" />