docs: add some comments to `config.ts`

src/config.ts

@@ -9,14 +9,14 @@ import { LinkPreset } from './types/config'
 export const siteConfig: SiteConfig = {
   title: 'Fuwari',
   subtitle: 'Demo Site',
-  lang: 'en',
+  lang: 'en',         // 'en', 'zh_CN', 'zh_TW', 'ja'
   themeColor: {
     hue: 250,         // Default hue for the theme color, from 0 to 360. e.g. red: 0, teal: 200, cyan: 250, pink: 345
     fixed: false,     // Hide the theme color picker for visitors
   },
   banner: {
     enable: false,
-    src: 'assets/images/demo-banner.png',
+    src: 'assets/images/demo-banner.png',   // Relative to the /src directory. Relative to the /public directory if it starts with '/'
   },
   favicon: [    // Leave this array empty to use the default favicon
     // {
@@ -34,20 +34,22 @@ export const navBarConfig: NavBarConfig = {
     LinkPreset.About,
     {
       name: 'GitHub',
-      url: 'https://github.com/saicaca/fuwari',
-      external: true,
+      url: 'https://github.com/saicaca/fuwari',     // Internal links should not include the base path, as it is automatically added
+      external: true,                               // Show an external link icon and will open in a new tab
     },
   ],
 }
 
 export const profileConfig: ProfileConfig = {
-  avatar: 'assets/images/demo-avatar.png',
+  avatar: 'assets/images/demo-avatar.png',  // Relative to the /src directory. Relative to the /public directory if it starts with '/'
   name: 'Lorem Ipsum',
   bio: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.',
   links: [
     {
       name: 'Twitter',
-      icon: 'fa6-brands:twitter',
+      icon: 'fa6-brands:twitter',       // Visit https://icones.js.org/ for icon codes
+                                        // You will need to install the corresponding icon set if it's not already included
+                                        // `pnpm add @iconify-json/<icon-set-name>`
       url: 'https://twitter.com',
     },
     {