feat: add new vested airdrop video

Author: maxdesalle

docs/support/03-how-to.mdx

@@ -6,15 +6,16 @@ title: "How-to Videos"
 
 ## Airdrops
 
-### How to Create an Airstream Campaign
+### How to Create a Sablier Vested Airdrop Campaign
 
 <iframe
   width="560"
   height="315"
-  src="https://www.youtube.com/embed/PJKvDU80W9w"
+  src="https://www.youtube.com/embed/xDTLGGewjNU?si=6TnFL8npi8tRual1"
   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>