add canonical urls

app/views/devise/sessions/new.html.erb

@@ -1,3 +1,4 @@
+<%= content_for(:canonical_url, new_user_session_url) %>
 <div class="max-w-lg mx-auto px-2">
   <%= render 'devise/shared/select_server' if Docuseal.multitenant? %>
   <h1 class="text-4xl font-bold text-center mt-8"><%= t('sign_in') %></h1>

app/views/layouts/application.html.erb

@@ -11,6 +11,9 @@
     <% else %>
       <%= javascript_pack_tag 'application', defer: true %>
     <% end %>
+    <% if canonical_url = content_for(:canonical_url) %>
+      <link href="<%= canonical_url %>" rel="canonical">
+    <% end %>
     <%= stylesheet_pack_tag 'application', media: 'all' %>
     <%= render 'shared/posthog' if ENV['POSTHOG_TOKEN'] %>
     <%= render 'shared/plausible' if !signed_in? && ENV['PLAUSIBLE_DOMAIN'] %>