ci: fix docker tag

Author: mrpollo

.github/workflows/dev_container.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           push: false
           load: true
-          tags: ghcr.io/px4-dev:latest
+          tags: ghcr.io/px4/px4-dev:latest
           file: ./Tools/container/Dockerfile
           platforms: |
             linux/amd64