HTML Validation fails because of ampersands in RSS link

Question

You can escape the HTML, so instead of echo $item['link']; you would write:

echo esc_html($item['link']); // This is a WP function
//or 
echo htmlspecialchars($item['link']); //PHP equivalent

Also important to note your code is depreciated, fetch_rss has been replaced by fetch_feed.

ps. You can also use esc_attr which is identical to esc_html in this case.