page's ToC for docsify.

1. Configure docsify-plugin-toc:

   <script>
   window.$docsify = {
     toc: {
       tocMaxLevel: 5,
       target: 'h2, h3, h4, h5, h6',
       ignoreHeaders:  ['<!-- {docsify-ignore} -->', '<!-- {docsify-ignore-all} -->']
     },
   }
   </script>

2. Insert style/script into docsify document:

   <!-- head -->
   <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/light.css">
   <!-- Also insert you custom css -->
   
   <!-- body -->
   <script src="https://unpkg.com/[email protected]/dist/docsify-plugin-toc.min.js"></script>