_mailer.html.erb in bullet_train-themes-light-1.3.20

- old
+ new

@@ -1,5 +1,5 @@
-<html xmlns="http://www.w3.org/1999/xhtml">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="<%= I18n.locale %>">
   <head>
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
     <title>Welcome to <%= t('application.name') %>!</title>
 