docs: update compose blog post link (#5547)

### What does this PR do?

Had the incorrect github link, this updates the compose blog post to the
correct link for the demo

### Screenshot / video of UI

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screenshots or screencasts showing the difference -->

N/A

### What issues does this PR fix or reference?

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repository (or from another issue tracker). -->

N/A

### How to test this PR?

N/A

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Signed-off-by: Charlie Drage <charlie@charliedrage.com>

website/blog/2024-01-02-getting-started-with-compose.md

@@ -45,13 +45,13 @@ Description:
 
 ## Download and run the example application
 
-Our example application is located at [github.com/redhat-developer/podman-desktop-compose-example](https://github.com/redhat-developer/podman-desktop-compose-example).
+Our example application is located at [github.com/redhat-developer/podman-desktop-demo](https://github.com/redhat-developer/podman-desktop-demo).
 
 We will use `git clone` so we can build the Go binary web application:
 
 ```sh
-git clone https://github.com/redhat-developer/podman-desktop-compose-example
-cd podman-desktop-compose-example
+git clone https://github.com/redhat-developer/podman-desktop-demo
+cd podman-desktop-demo/guestbook-compose
 ```
 
 Run `podman compose up -d` to start the application: