add link to GH Sync Demo

Author: gavination

blog/2023-09-15-teams-feature-overview/index.mdx

@@ -62,7 +62,7 @@ This prevents confusion and allows for a shared context between all members of t
 ### But what about source control? Shouldn't that be the source of truth?
 Ideally, yes, the team's repository is the single source of truth for all application logic, but not every member of the team is a developer, nor should they all have access to source code.
 That said, we know teams need to ensure their machines in the Studio are always in lockstep with the rest of their source, so we added the ability to [import machines directly from GitHub](https://stately.ai/docs/import-from-github).
-We're also working on a full-fledged GitHub Sync feature, allowing users to save machines as commits back to their source repos, so stay tuned for that announcement!
+We're also working on a full-fledged GitHub Sync feature, allowing users to save machines as commits back to their source repos! Check out Anders' demo showing off the feature [here](https://www.youtube.com/watch?v=WelBycMg2eA&t=1293s).