Remove trailing white spaces at the end of non blank line

Author: jalogut

lib/internal/Magento/Framework/App/ResourceConnection/Config.php

@@ -63,7 +63,7 @@ public function getConnectionName($resourceName)
     {
         $this->initConnections();
         $connectionName = \Magento\Framework\App\ResourceConnection::DEFAULT_CONNECTION;
-        
+ 
         if (!isset($this->_connectionNames[$resourceName])) {
             $resourcesConfig = $this->get();
             $pointerResourceName = $resourceName;