link to open a new tab (#18121)

Author: jason-cf

src/content/docs/workers-ai/index.mdx

@@ -26,7 +26,7 @@ With the launch of Workers AI, Cloudflare is rolling out GPUs to its global netw
 
 <div>
   <LinkButton href="/workers-ai/get-started">Get started</LinkButton>
-  <LinkButton variant="secondary" icon="external" href="https://youtu.be/cK_leoJsBWY?si=4u6BIy_uBOZf9Ve8">Watch a Workers AI demo</LinkButton>
+  <LinkButton target="_blank" variant="secondary" icon="external" href="https://youtu.be/cK_leoJsBWY?si=4u6BIy_uBOZf9Ve8">Watch a Workers AI demo</LinkButton>
 </div>