add upate example in feed

Author: lawreka

components/update.mdx

@@ -62,9 +62,15 @@ Use multiple `Update` components to create [changelogs](/guides/changelogs).
   </Update>
   ```
 
-<div style={{ border: '2px solid #ff00ff' }}>
-  TODO: insert screenshot of RSS feed with title and description
-</div>
+```xml Example Update item in RSS feed
+  <item>
+    <title><![CDATA[v1.0.1 released]]></title>
+    <description><![CDATA[Bug fixes and improvements]]></description>
+    <link>https://mintlify.com/changelog#v101</link>
+    <guid isPermaLink="true">https://mintlify.com/changelog#v101</guid>
+    <pubDate>Fri, 20 Jun 2025 21:32:19 GMT</pubDate>
+  </item>
+```
 
   Learn more about [subscribable changelogs](/guides/changelogs#subscribable-changelogs).
 </ResponseField>