Update lib/routes/rumble/channel.ts to change catagory to multimedia

Co-authored-by: Tony <TonyRL@users.noreply.github.com>

Author: luckycold

lib/routes/rumble/channel.ts

@@ -11,7 +11,7 @@ const rootUrl = 'https://rumble.com';
 
 export const route: Route = {
     path: '/c/:channel/:embed?',
-    categories: ['social-media'],
+    categories: ['multimedia'],
     view: ViewType.Videos,
     name: 'Channel',
     maintainers: ['luckycold'],