Fixed annotations

- Magento\Customer\Model\Address\AbstractAddress::getCountry()
- Magento\Customer\Model\Address\AbstractAddress::getCountryId()

Author: sreichel

app/code/Magento/Customer/Model/Address/AbstractAddress.php

@@ -23,7 +23,7 @@
  * @method string getFirstname()
  * @method string getMiddlename()
  * @method string getLastname()
- * @method int getCountryId()
+ * @method string getCountryId()
  * @method string getCity()
  * @method string getTelephone()
  * @method string getCompany()
@@ -425,7 +425,7 @@ public function getRegionId()
     }
 
     /**
-     * @return int
+     * @return string
      */
     public function getCountry()
     {