fixed sanitazer and academy

app/Services/RSS/RSSFeedBuilder.php

@@ -61,12 +61,14 @@ final class RSSFeedBuilder
         string     $channelLink,
         string     $feedUrl,
         Collection $items,
+        ?string    $canonicalUrl = null,
     ): Response {
         $xml = view('rss.channel', [
             'channelTitle'       => trim($channelTitle) . ' — Skinbase',
             'channelDescription' => $channelDescription,
             'channelLink'        => $channelLink,
             'feedUrl'            => $feedUrl,
+            'canonicalUrl'       => $canonicalUrl ?: $feedUrl,
             'items'              => $items,
             'buildDate'          => now()->toRfc2822String(),
         ])->render();