Updating installation.md

Signed-off-by: Teodor Parvanov <teodor.parvanov@intel.com>

docs/installation.md

@@ -61,7 +61,7 @@ This method can be used to run federated learning experiments in an isolated env
 	> **Note:** OpenFL image hosted on `docker.io` has not been updated since the 1.5 release due to a change in namespace. We are working on this issue. In the meantime, use the instructions below to build an image from source.
 
 	```bash
-	docker pull intel/openfl
+	docker pull ghcr.io/securefederatedai/openfl/openfl:latest
 	```
 
 * Build from source: