add the 'lts' prefix to the URL in the long rss items, too (if needed)

english/template/debian/recent_list.wml

@@ -366,7 +366,7 @@ sub grab_titles {
 		{
 		    push @str1, "\n"
 			."<item rdf:about=\"https://www.debian.org"
-			."/security/$rdfbase\">\n"
+			."$prefix/security/$rdfbase\">\n"
 			."  <title>$title - $desc</title>\n"
 			."  <link>https://www.debian.org"
 			."/security/$rdfbase</link>\n"