Change scheduling link

Author: vrushankportkey

README.md

@@ -67,7 +67,7 @@ The AI Gateway's enterprise version offers enterprise-ready capabilities for **o
 
 The enterprise deployment architecture, supported platforms is available here - [**Enterprise Private Cloud Deployments**](https://docs.portkey.ai/docs/product/enterprise-offering/private-cloud-deployments)
 
-<a href="https://app.portkey.ai/signup"><img src="https://portkey.ai/blog/content/images/2024/08/Get-API-Key--5-.png" height=50 alt="Book an enterprise AI gateway demo" /></a><br>
+<a href="https://portkey.sh/demo-13"><img src="https://portkey.ai/blog/content/images/2024/08/Get-API-Key--5-.png" height=50 alt="Book an enterprise AI gateway demo" /></a><br>
 
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