app/views/devise/mailer/two_factor_authentication_code.html.erb
<%
context = @resource.registration_context.respond_to?(:to_s_in) ? @resource.registration_context.to_s_in(@resource.language)
: @resource.registration_context.to_s
%>
<p><%= t('devise.mailer.two_factor_authentication_code.text_html', context: context, code: @code, duration: @duration) %></p>