[Routing] Fix XmlFileLoader exception message

Author: voronkovich

Loader/XmlFileLoader.php

@@ -250,7 +250,7 @@ private function parseConfigs(\DOMElement $node, $path)
                     $condition = trim($n->textContent);
                     break;
                 default:
-                    throw new \InvalidArgumentException(sprintf('Unknown tag "%s" used in file "%s". Expected "default", "requirement" or "option".', $n->localName, $path));
+                    throw new \InvalidArgumentException(sprintf('Unknown tag "%s" used in file "%s". Expected "default", "requirement", "option" or "condition".', $n->localName, $path));
             }
         }