site: adjust to the new model

similarity_score was renamed to score.

lib/Pooru/Site/Controller/Media.pm

@@ -75,7 +75,7 @@ sub show ($self)
 
 		if (!$similar->[0]->error) {
 			my @similar_media = map +{
-				similarity_score => $_->{similarity_score},
+				score => $_->{score},
 				show_media_url => $self->url_for("show_media",
 				    media_id => $_->{id})
 				    ->query(tags => $tags),