MCP-903: Fix default connection = db setting after Magento installation

- Option description updated.

Author: adifucan

app/code/Magento/MessageQueue/Setup/ConfigOptionsList.php

@@ -62,8 +62,8 @@ public function getOptions()
                 self::INPUT_KEY_QUEUE_DEFAULT_CONNECTION,
                 TextConfigOption::FRONTEND_WIZARD_TEXT,
                 self::CONFIG_PATH_QUEUE_DEFAULT_CONNECTION,
-                'Message queues default connection. Can be \'db\', \'amqp\' or a custom queue system that is'
-                . ' installed and configured. Otherwise messages won\'t be processed correctly.'
+                'Message queues default connection. Can be \'db\', \'amqp\' or a custom queue system.'
+                . 'The queue system must be installed and configured, otherwise messages won\'t be processed correctly.'
             ),
         ];
     }