Merge branch '634-opensearch-prafix-fehler' into 'development'

Resolve "OpenSearch Präfix-Fehler"

Closes #634

See merge request !1099

resources/views/layouts/atom10ad.blade.php

@@ -3,7 +3,7 @@
    <ad:callOut type="TEXT">{!! trans('ad.von') !!} {!! $ad->gefVon !!}</ad:callOut>
    <ad:title type="TEXT">{{ $ad->titel }}</ad:title>
    <ad:displayUrl type="TEXT">{{ $ad->anzeigeLink }}</ad:displayUrl>
-   <ad:subTitle atom:type="TEXT">{{ $ad->descr }}</ad:subTitle>
+   <ad:subTitle type="TEXT">{{ $ad->descr }}</ad:subTitle>
    <link href="{{ $ad->link }}" />
  </ad:advertisement> 
 @endif
\ No newline at end of file