[#1598] Tweaks to new Luhn validator entry

Author: weaverryan

reference/constraints/Luhn.rst

@@ -1,8 +1,8 @@
 Luhn
 ======
 
-This constraint is used to ensure that a creditcard number passes the Luhn algorithm.
-It is useful as a first step to validating a creditcard, before communicating with a
+This constraint is used to ensure that a credit card number passes the `Luhn algorithm`_.
+It is useful as a first step to validating a credit card: before communicating with a
 payment gateway.
 
 +----------------+-----------------------------------------------------------------------+
@@ -18,8 +18,8 @@ payment gateway.
 Basic Usage
 -----------
 
-To use the Luhn validator, simply apply it to a property on an object that will contain
-the creditcard number submission.
+To use the Luhn validator, simply apply it to a property on an object that
+will contain a credit card number.
 
 .. configuration-block::
 
@@ -30,15 +30,15 @@ the creditcard number submission.
             properties:
                 cardNumber:
                     - Luhn:
-                        message: Please check your creditcard number.
+                        message: Please check your credit card number.
 
     .. code-block:: xml
 
         <!-- src/Acme/SubscriptionBundle/Resources/config/validation.xml -->
         <class name="Acme\SubscriptionBundle\Entity\Transaction">
             <property name="cardNumber">
                 <constraint name="Luhn">
-                    <option name="message">Please check your creditcard number.</option>
+                    <option name="message">Please check your credit card number.</option>
                 </constraint>
             </property>
         </class>
@@ -51,7 +51,7 @@ the creditcard number submission.
         class Transaction
         {
             /**
-             * @Assert\Luhn(message = "Please check your creditcard number.")
+             * @Assert\Luhn(message = "Please check your credit card number.")
              */
             protected $cardNumber;
         }
@@ -69,7 +69,7 @@ the creditcard number submission.
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
                 $metadata->addPropertyConstraint('luhn', new Luhn(array(
-                    'message' => 'Please check your creditcard number',
+                    'message' => 'Please check your credit card number',
                 )));
             }
         }
@@ -83,3 +83,5 @@ message
 **type**: ``string`` **default**: ``Invalid card number``
 
 The default message supplied when the value does not pass the Luhn check.
+
+.. _`Luhn algorithm`: http://en.wikipedia.org/wiki/Luhn_algorithm