changed docs as proposed in #3110

src/Symfony/Component/Config/Definition/VariableNode.php

@@ -14,9 +14,9 @@ namespace Symfony\Component\Config\Definition;
 use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
 
 /**
- * This node represents a variable value in the config tree.
+ * This node represents a value of variable type in the config tree.
  *
- * This node is intended for arbitrary variables.
+ * This node is intended for values of arbitrary type.
  * Any PHP type is accepted as a value.
  *
  * @author Jeremy Mikola <jmikola@gmail.com>