fix(route/aeon): audio type is inaccessible (#21067)

Author: emdoe

lib/routes/aeon/type.ts

@@ -45,7 +45,6 @@ export const route: Route = {
             options: [
                 { value: 'essays', label: 'Essays' },
                 { value: 'videos', label: 'Videos' },
-                { value: 'audio', label: 'Audio' },
             ],
         },
     },
@@ -65,7 +64,7 @@ export const route: Route = {
     name: 'Types',
     maintainers: ['emdoe'],
     handler,
-    description: `Supported types: Essays, Videos, and Audio.
+    description: `Supported types: Essays and Videos.
 
   Compared to the official one, the RSS feed generated by RSSHub not only has more fine-grained options, but also eliminates pull quotes, which can't be easily distinguished from other paragraphs by any RSS reader, but only disrupt the reading flow. This feed also provides users with a bio of the author at the top.`,
 };