fix: pdf issue w/ markdown

backend/open_webui/utils/pdf_generator.py

@@ -54,17 +54,17 @@ class PDFGenerator:
         html_content = markdown(content, extensions=["pymdownx.extra"])
 
         html_message = f"""
+            <div> {date_str} </div>
             <div class="message">
-                  <small> {date_str} </small>
                 <div>
                     <h2>
                         <strong>{role.title()}</strong>
-                          <small class="text-muted">{model}</small>
+                        <span style="font-size: 12px; color: #888;">{model}</span>
                     </h2>
                 </div>
-                  <div class="markdown-section">
-                      {html_content}
-                  </div>
+                <pre class="markdown-section">
+                    {content}
+                </pre>
             </div>
           """
         return html_message