Fix invalid syntax

Author: AlecRust

web/templates/pages/list_web.php

@@ -44,7 +44,7 @@
 							<?php } ?>
 							<option value="suspend"><?= _("Suspend") ?></option>
 							<option value="unsuspend"><?= _("Unsuspend") ?></option>
-							<?php if ($_SESSION["PROXY_SYSTEM"] == "nginx" || $_SESSION["WEB_SYSTEM"] == "nginx") { ?>}
+							<?php if ($_SESSION["PROXY_SYSTEM"] == "nginx" || $_SESSION["WEB_SYSTEM"] == "nginx") { ?>
 								<option value="purge"><?= _("Purge Nginx Cache") ?></option>
 							<?php } ?>
 							<option value="delete"><?= _("Delete") ?></option>