Update jquery.easy-validation.js

Fixed typo

Author: andrewhughey

src/jquery.easy-validation.js

@@ -20,7 +20,7 @@
  *    When used on a form, it prescribes a global default message for all fields 
  *    that are invalid when empty; when used on a field, it provides a field-specific
  *    error message when empty.
- *  - The data-validaiton-error-invalid attribute
+ *  - The data-validation-error-invalid attribute
  *    When used on a form, it prescribes a global default message for all fields that 
  *    are invalid; when used on a field, it provides a field-specific error message when invalid.
  * 
@@ -261,4 +261,4 @@
 	}
 
 
-})( jQuery, document, window, navigator.userAgent.toLowerCase() );
+})( jQuery, document, window, navigator.userAgent.toLowerCase() );