fix wrong button on Quickstart (#2367)

## Summary

Found that we're using the older button on quickstart. Updated it here

## How was it tested?

docs/app/docs/quickstart.mdx

@@ -21,7 +21,7 @@ Follow the instruction from [the installation guide](./installing_devbox.mdx).
 :::note
 If you want to try Devbox before installing it, you can open a cloud shell on your browser using the link below
 
-[![Open In Devspace](https://www.jetify.com/img/devbox/open-in-devbox.svg)](https://www.jetify.com/devbox/templates/tutorial)
+[![Open In Devspace](https://www.jetify.com/img/devbox/open-in-devspace.svg)](https://www.jetify.com/devbox/templates/tutorial)
 :::
 
 ## Create a Development Environment