update readme

README.md

@@ -229,7 +229,7 @@ Contact us at [[email protected]](mailto:[email protected]) for a free
 ## Support
 
 - **Documentation**: [docs.inference.net](https://docs.inference.net/use-cases/video-understanding)
-- **API Access**: [inference.net/use-cases/video-understanding](https://docs.inference.net/use-cases/video-understanding)
+- **API Access**: Get $25 in free credits when you [sign up](https://inference.net/register) for an account
 - **Email**: [email protected]
 
 ## License