new syntax highlighting theme (#14)

Author: Shubhaankar-Sharma

index.html

@@ -16,6 +16,7 @@
   <meta name="twitter:card" content="summary_large_image">
   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsify@4/lib/themes/vue.css">
   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsify-darklight-theme@3/dist/style.min.css" integrity="sha256-iCuOxtYWNr4wPKxT7rWzyHs8b8JcY7hK++1DtQ5S8uM=" crossorigin="anonymous">
+  <link rel="stylesheet" media="(prefers-color-scheme: dark)" href="//cdn.jsdelivr.net/npm/prism-themes@1/themes/prism-one-dark.min.css"/>
   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link href="https://fonts.googleapis.com/css2?family=Open+Sans&display=swap" rel="stylesheet">