fix(route): fix 免費資源網路社群 (#14829)

lib/routes/free/rss.ts

@@ -4,13 +4,14 @@ import got from '@/utils/got';
 
 export const route: Route = {
     path: '/',
+    categories: ['blog'],
+    example: '/free',
     radar: [
         {
             source: ['free.com.tw/'],
-            target: '',
         },
     ],
-    name: 'Unknown',
+    name: '最新文章',
     maintainers: ['cnkmmk'],
     handler,
     url: 'free.com.tw/',