fixed typo in ispconfig_update.php

Author: Florian Schaal

server/scripts/ispconfig_update.php

@@ -93,7 +93,7 @@ function simple_query($query, $answers, $default)
 if($method == 'stable') {
 	$new_version = @file_get_contents('http://www.ispconfig.org/downloads/ispconfig3_version.txt') or die('Unable to retrieve version file.');
 	$new_version = trim($new_version);
-	if(version_compare($new_version, ISPC_APP_VERSION, '>') {
+	if(version_compare($new_version, ISPC_APP_VERSION, '>')) {
 		passthru('/usr/local/ispconfig/server/scripts/update_from_tgz.sh');
 		exit;
 	} else {