use pt sans and roboto for code (#12)

Author: Shubhaankar-Sharma

index.html

@@ -14,8 +14,8 @@
   <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
   <meta property="og:image" content="https://raw.githubusercontent.com/go-chi/chi/master/docs/assets/chi.png" />
   <meta name="twitter:card" content="summary_large_image">
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsify@4.12.1/lib/themes/vue.css">
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsify-darklight-theme@3.2.0/dist/style.min.css" integrity="sha256-iCuOxtYWNr4wPKxT7rWzyHs8b8JcY7hK++1DtQ5S8uM=" crossorigin="anonymous">
+  <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="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">
@@ -52,8 +52,8 @@
       themeColor: '#14b853',
       darklightTheme: {
         defaultTheme : 'dark',
-        codeFontFamily : "'Open Sans', sans-serif",
-        siteFont : "'Open Sans'",
+        codeFontFamily : 'Roboto Mono, Monaco, courier, monospace',
+        siteFont : "PT Sans",
         dark: {
           textColor: '#ffffff',
           blockQuoteColor: '#999999',
@@ -73,8 +73,8 @@
   </script>
 </script>
   <script src="//unpkg.com/docsify/lib/docsify.min.js"></script>  
-  <script src="https://cdn.jsdelivr.net/npm/docsify-darklight-theme@3.2.0/dist/index.min.js" integrity="sha256-u0+KcSs8hp4Wdux9vSi71vUSR1brxvnxL+2I5Vfie+0=" crossorigin="anonymous"></script>
-  <script src="https://cdn.jsdelivr.net/npm/docsify-copy-code@2.1.1/dist/docsify-copy-code.min.js" integrity="sha256-8RM7T/q4FqeRqHqvRITDUFPFrMuFyE+PpeaFpdLM0Fw=" crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/docsify-darklight-theme@3/dist/index.min.js" integrity="sha256-u0+KcSs8hp4Wdux9vSi71vUSR1brxvnxL+2I5Vfie+0=" crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/docsify-copy-code@2/dist/docsify-copy-code.min.js" integrity="sha256-8RM7T/q4FqeRqHqvRITDUFPFrMuFyE+PpeaFpdLM0Fw=" crossorigin="anonymous"></script>
   <script src="https://cdn.jsdelivr.net/npm/prismjs@1.24.1/components/prism-go.min.js" integrity="sha256-jMFHuzUuIKDkiWxVNKgt9Pb+39LspOzv3+atXNO3SNo=" crossorigin="anonymous"></script>
   <script src="//unpkg.com/docsify-pagination/dist/docsify-pagination.min.js"></script>
   <script src="//unpkg.com/docsify/lib/plugins/search.min.js"></script>