Fix target to _blank for links in CE/Modules

Author: zonky2

src/CoreBundle/Contao/Hooks/AbstractContentElementAndModuleCallback.php

@@ -556,7 +556,7 @@ private function renderEditButton(string $caption, string $title, UrlBuilder $ur
         );
 
         return sprintf(
-            '<a href="%s" title="%s" style="padding-left:3px">%s</a>',
+            '<a href="%s" title="%s" target="_blank" style="padding-left:3px">%s</a>',
             $url->getUrl(),
             $title,
             $icon