Add missing hr to the settings html

public/scripts/extensions/vectors/settings.html

@@ -151,6 +151,8 @@
                 <textarea id="vectors_summary_prompt" class="text_pole textarea_compact" rows="6" placeholder="This prompt will be sent to AI to request the summary generation."></textarea>
             </div>
 
+            <hr>
+
             <div id="vectors_chats_settings">
                 <div id="vectors_advanced_settings">
                     <label for="vectors_template">