use the right checker

Author: chrisns

.github/workflows/ci.yml

@@ -10,5 +10,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # renovate: tag=v2.4.0
-      - uses: docker://ghcr.io/example-policy-org/policy-checker:latest
+      - uses: docker://ghcr.io/example-policy-org-demo/policy-checker:latest