feat: add batch-cancel support video

Author: maxdesalle

docs/support/03-how-to.mdx

@@ -86,6 +86,19 @@ title: "How-to Videos"
   allowfullscreen
 ></iframe>
 
+### How to Batch-Cancel streams
+
+<iframe
+  width="560"
+  height="315"
+  src="https://www.youtube.com/embed/fRlUAMx2YFA?si=pklF7Xb2T_9TgPiG"
+  title="YouTube video player"
+  frameBorder="0"
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
+  referrerPolicy="strict-origin-when-cross-origin"
+  allowfullscreen
+></iframe>
+
 ### How to Create Vesting Streams Using the CSV Upload Feature
 
 <iframe