[Validator] fixed phpdoc

Author: fabpot

src/Symfony/Component/Validator/Constraints/EmailValidator.php

@@ -62,7 +62,7 @@ public function validate($value, Constraint $constraint)
  /**
  * Check DNS Records for MX type.
  *
- * @param string $host Hostname
+ * @param string $host Host
  *
  * @return Boolean
  */
@@ -74,7 +74,7 @@ private function checkMX($host)
  /**
  * Check if one of MX, A or AAAA DNS RR exists.
  *
- * @param string $host Hostname
+ * @param string $host Host
  *
  * @return Boolean
  */