added Asset video

foundation/www/docs/user/manual/en/asset/index.md

@@ -3,6 +3,12 @@
 
 In ERPNext, you can maintain fixed asset records like Computers, Furnitures, Cars, etc. and manage depreciations, sale or disposal of those assets.
 
+<div class="embed-container">
+    <iframe src="https://www.youtube.com/embed/I-K8pLRmvSo" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen>
+    </iframe>
+</div>
+
+
 ### Topics
 
 {index}