MQE-1257: MFTF doctor command

Author: jilu1

src/Magento/FunctionalTestingFramework/Module/MagentoWebDriverDoctor.php

@@ -137,7 +137,7 @@ private function loadPageAtUrl($url)
 
         throw new TestFrameworkException(
             "Failed to load page at url: $url\n"
-            . "Please check network connection for the browser running Selenium."
+            . "Please check Selenium Browser session have access to Magento instance."
         );
     }