Fix secret name

Author: michaelosthege

.github/workflows/docker-image.yml

@@ -17,7 +17,7 @@ jobs:
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
-          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta