CRM-13722 Fixes description of country_id in contact API.

http://issues.civicrm.org/jira/browse/CRM-13722

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* CRM-13722: Contact API shows wrong title of field country_id
  http://issues.civicrm.org/jira/browse/CRM-13722

api/v3/Contact.php

@@ -182,7 +182,7 @@ function _civicrm_api3_contact_get_spec(&$params) {
   $params['state_province_id']['title'] = 'Primary Address State Province ID';
   $params['state_province_name']['title'] = 'Primary Address State Province Name';
   $params['state_province']['title'] = 'Primary Address State Province';
-  $params['country_id']['title'] = 'Primary Address State Province ID';
+  $params['country_id']['title'] = 'Primary Address Country ID';
   $params['country']['title'] = 'Primary Address country';
   $params['worldregion_id']['title'] = 'Primary Address World Region ID';
   $params['worldregion']['title'] = 'Primary Address World Region';