fix docker image name

Author: PeioMena

.github/workflows/docker-publish.yml

@@ -9,7 +9,7 @@ env:
   REGISTRY: ghcr.io
   # Image name = codesyntax/docker-cron-image
   # IMAGE_NAME: ${{ github.repository }}
-  IMAGE_NAME: cron-runner
+  IMAGE_NAME: codesyntax/cron-runner
 
 jobs:
   build-and-push: