app/views/admin/newsletters/new.html.erb
<%= back_link_to admin_newsletters_path %>
<h2><%= t("admin.newsletters.new.title") %></h2>
<p>
<%= sanitize(t("admin.newsletters.new.header_footer_help_text",
link: link_to(t("admin.newsletters.new.image_link"),
admin_site_customization_images_path))) %>
</p>
<%= render "form" %>