[fix] switch to en_GB instead of en_US

views/ethikis_survey_translate_views.xml

@@ -12,7 +12,7 @@
                     <a t-att-href="url_for(request.httprequest.path + '?' + keep_query(), lang='fr_FR')">
                         <img class="ethikis-flag" src="/ethikis_survey_translate/static/src/img/france.svg" alt="French"/>
                     </a>
-                    <a t-att-href="url_for(request.httprequest.path + '?' + keep_query(), lang='en_US')">
+                    <a t-att-href="url_for(request.httprequest.path + '?' + keep_query(), lang='en_GB')">
                         <img class="ethikis-flag" src="/ethikis_survey_translate/static/src/img/united-kingdom.svg" alt="English"/>
                     </a>
                     <a t-att-href="url_for(request.httprequest.path + '?' + keep_query(), lang='de_DE')">