Fix is_IS Address docbock type (#438)

Author: krsriq

Diff for: phpstan-baseline.neon

@@ -864,16 +864,6 @@ parameters:
 			count: 1
 			path: src/Faker/Provider/id_ID/Person.php
 
-		-
-			message: "#^Property Faker\\\\Provider\\\\is_IS\\\\Address\\:\\:\\$postcode has unknown class Faker\\\\Provider\\\\is_IS\\\\Icelandic as its type\\.$#"
-			count: 1
-			path: src/Faker/Provider/is_IS/Address.php
-
-		-
-			message: "#^Static property Faker\\\\Provider\\\\is_IS\\\\Address\\:\\:\\$postcode \\(Faker\\\\Provider\\\\is_IS\\\\Icelandic\\) does not accept default value of type array\\<int, string\\>\\.$#"
-			count: 1
-			path: src/Faker/Provider/is_IS/Address.php
-
 		-
 			message: "#^Binary operation \"\\*\" between string and string results in an error\\.$#"
 			count: 1

Diff for: src/Faker/Provider/is_IS/Address.php

@@ -82,7 +82,7 @@ class Address extends \Faker\Provider\Address
     ];
 
     /**
-     * @var Icelandic zip code.
+     * @var array Icelandic zip code.
      */
     protected static $postcode = [
         '%##',