Store.php: fixed problem with wrong config varname for DB.

extension/qfq/qfq/store/Store.php

@@ -470,8 +470,8 @@ class Store {
      */
     public static function setAutoConfigValue(array $config) {
 
-        $config[SYSTEM_DB_NAME_DATA] = $config['SYSTEM_DB_' . $config[SYSTEM_DB_INDEX_DATA] . '_NAME'] ?? '';
-        $config[SYSTEM_DB_NAME_QFQ] = $config['SYSTEM_DB_' . $config[SYSTEM_DB_INDEX_QFQ] . '_NAME'] ?? '';
+        $config[SYSTEM_DB_NAME_DATA] = $config['DB_' . $config[SYSTEM_DB_INDEX_DATA] . '_NAME'] ?? '';
+        $config[SYSTEM_DB_NAME_QFQ] = $config['DB_' . $config[SYSTEM_DB_INDEX_QFQ] . '_NAME'] ?? '';
 
         return $config;
     }