docs: update sources (#1664)

docs/content/4.api/3.configuration.md

@@ -72,8 +72,8 @@ The watcher is a development feature and will not be included in production.
 
 ## `sources`
 
-- Type: `Array<Object | String>`{lang=ts}
-- Default: `['content']`{lang=ts}
+- Type: `Record<String, Object>`{lang=ts}
+- Default: `{}`{lang=ts}
 
 Define different sources for contents.
 
@@ -82,20 +82,29 @@ Contents can be located in multiple places, in multiple directories, or in remot
 ```ts [nuxt.config.ts]
 export default defineNuxtConfig({
   content: {
-    sources: [
-      'content',
-      {
-        name: 'fa-ir',
+    sources: {
+      // overwrite default source AKA `content` directory
+      content: {
+        driver: 'fs',
+        prefix: '/docs', // All contents inside this source will be prefixed with `/docs`
+        base: resolve(__dirname, 'content')
+      }
+      // Additional sources
+      fa: {
         prefix: '/fa', // All contents inside this source will be prefixed with `/fa`
         driver: 'fs',
         // ...driverOptions
         base: resolve(__dirname, 'content-fa') // Path for source directory
       }
-    ]
+    }
   }
 })
 ```
 
+::Alert
+It is highly recommended to prevent modifying default source. If you want to load contents from another location, consider adding an additional source.
+::
+
 ## `ignores`
 
 - Type: `string[] | object[]`{lang=ts}

docs/nuxt.config.ts

@@ -24,25 +24,21 @@ export default defineNuxtConfig({
   content: {
     sources: {
       v1: {
-        name: 'v1',
         prefix: '/v1',
         driver: 'fs',
         base: resolve(__dirname, 'content-v1/en')
       },
       'v1-ja': {
-        name: 'v1-ja',
         prefix: '/ja/v1',
         driver: 'fs',
         base: resolve(__dirname, 'content-v1/ja')
       },
       'v1-fr': {
-        name: 'v1-fr',
         prefix: '/fr/v1',
         driver: 'fs',
         base: resolve(__dirname, 'content-v1/fr')
       },
       'v1-ru': {
-        name: 'v1-ru',
         prefix: '/ru/v1',
         driver: 'fs',
         base: resolve(__dirname, 'content-v1/ru')