Link to list of country codes

templates/details.tpl

@@ -26,7 +26,9 @@
 				</div>
 
 				<div class="pure-control-group">
-					<label for="form-country">Country (ISO2)</label>
+					<label for="form-country">
+						Country (<a href="https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes#Current_ISO_3166_country_codes" target="_blank">ISO 3166 Alpha-2</a>)
+					</label>
 					<input id="form-country" type="text" name="country" value="{{ .Wine.Country }}" placeholder="XXX" pattern="[A-Z]{2}">
 					{{ if ne .Wine.Country.String "XX" }}
 						<img src="/static/flags/{{ .Wine.Country }}.png">