HT.yaml in countries-3.1.0

- old
+ new

@@ -18,9 +18,10 @@
   subregion: Caribbean
   world_region: AMER
   un_locode: HT
   nationality: Haitian
   postal_code: true
+  postal_code_format: "\\d{4}"
   unofficial_names:
   - Haiti
   - ハイチ
   - Haïti
   languages_official: