Update README.md

Author: atupem

README.md

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 3. Press **Deploy**. Railway will spin up the Desktop, Agent, UI and Postgres services using pre-built container images, connect them via [private networking](https://docs.railway.com/guides/private-networking) and expose only the UI publicly.
 4. In about two minutes your agent will be live at your project's public URL.
 
-_For an in-depth guide see [`docs/deployment/railway`](docs/deployment/railway)._
+_For an in-depth guide see [here](https://docs.bytebot.ai/deployment/railway)._
 
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