update icon

app/views/shared/_settings_nav.html.erb

@@ -132,7 +132,7 @@
         <%= capture do %>
           <div class="tooltip" data-tip="<%= t('ai_assistant') %>">
             <a href="<%= Docuseal::CHATGPT_URL %>" target="_blank" class="btn btn-circle btn-primary btn-md">
-              <%= svg_icon('brand_openai', class: 'w-8 h-8') %>
+              <%= svg_icon('message', class: 'w-8 h-8') %>
             </a>
           </div>
         <% end %>