docs: add role description

docs/docusaurus.config.js

@@ -4,7 +4,7 @@
 // There are various equivalent ways to declare your Docusaurus config.
 // See: https://docusaurus.io/docs/api/docusaurus-config
 
-import {themes as prismThemes} from 'prism-react-renderer';
+import { themes as prismThemes } from 'prism-react-renderer';
 
 /** @type {import('@docusaurus/types').Config} */
 const config = {
@@ -43,8 +43,7 @@ const config = {
           sidebarPath: './sidebars.js',
           // Please change this to your repo.
           // Remove this to remove the "edit this page" links.
-          editUrl:
-            'https://github.com/facebook/docusaurus/tree/main/packages/create-docusaurus/templates/shared/',
+          editUrl: 'https://github.com/facebook/docusaurus/tree/main/packages/create-docusaurus/templates/shared/',
         },
         theme: {
           customCss: './src/css/custom.css',
@@ -64,12 +63,10 @@ const config = {
           alt: 'TestPlat Logo',
           src: 'img/android-chrome-192x192.png',
         },
-        items: [
-          {to: '/docs', label: 'Docs', position: 'left'},
-        ],
+        items: [{ to: '/docs', label: 'Docs', position: 'left' }],
       },
       footer: {
-        style: 'dark',
+        style: 'light',
         copyright: `Copyright © ${new Date().getFullYear()} TestPlat. Built with Docusaurus.`,
       },
       prism: {