README: trim Installation section

Also update the screenshot to show the new extensions page.

Signed-off-by: Valentin Rothberg <[email protected]>

Author: vrothberg

README.md

@@ -37,6 +37,4 @@ From a technical perspective, the extension is not required when running on Linu
 
 You can install the Red Hat Account Extension directly inside of Podman Desktop.  It is also part of the Red Hat Extension Pack:
 
-![image](https://raw.githubusercontent.com/redhat-developer/podman-desktop-redhat-account-ext/v1.0.0/screenshots/extension-pack.png)
-
-Extensions for Podman Desktop are shipped as OCI container images, which can be manually installed in the Extensions menu of Podman Desktop.  Please refer to the [Podman Desktop documentation](https://podman-desktop.io/docs/extensions/install) for installation instructions and to [Quay.io](https://quay.io/repository/redhat-developer/podman-desktop-redhat-account-ext?tab=tags) for available tags of the Red Hat Account Extension.
+![image](https://raw.githubusercontent.com/redhat-developer/podman-desktop-redhat-account-ext/main/screenshots/installation.png)