adapt to new domain

src/model/log.rs

@@ -45,8 +45,8 @@ LIMIT 1000
 <rss version="2.0">
 <channel>
 <title>Ruder App Admin Feed</title>
-<link>app.rudernlinz.at</link>
-<description>An RSS feed with activities from app.rudernlinz.at</description>"#,
+<link>rudi.rudernlinz.at</link>
+<description>An RSS feed with activities from rudi.rudernlinz.at</description>"#,
         );
         for log in Self::last(db).await {
             let utc_time: DateTime<Utc> = Utc::from_utc_datetime(&Utc, &log.created_at);