chore: update fleet management banner (#5858)

Author: yggg

docs/app/pages/home/backend-bundles-section/backend-bundles-section.component.html

@@ -62,7 +62,7 @@ <h4 class="package-card__title">{{ product.title }}</h4>
     <a href="https://www.akveo.com/templates/fleet-management-dashboard?utm_campaign=services%20-%20templates%20-%20ngx-admin%20&utm_source=ngx-admin&utm_medium=referral&utm_content=landing_banner" target="_blank" aria-label="Template for Fleet Management Software">
       <picture>
         <source srcset="assets/img/fleet-management-banner.webp" type="image/webp">
-        <img src="assets/img/fleet-management-banner.png"
+        <img src="assets/img/fleet-management-banner.jpg"
              class="fleet-management-template-banner-image"
              alt="Template for Fleet Management Software">
       </picture>