Don't embed docs and external sites in iframes, to allow the external sites to set X-FRAME-OPTIONS = DENY for security. Fxies #3985

web/pgadmin/preferences/static/js/preferences.js

@@ -447,7 +447,7 @@ define('pgadmin.preferences', [
             if (e.button.element.name == 'dialog_help') {
               e.cancel = true;
               pgBrowser.showHelp(e.button.element.name, e.button.element.getAttribute('url'),
-                null, null, e.button.element.getAttribute('label'));
+                null, null);
               return;
             }