fix test

Author: xuzhao9

.github/workflows/tritonbench.yml

@@ -145,7 +145,7 @@ jobs:
           fi
 
           CONDA_ENV="triton-main"
-          DOCKER_IMAGE="meta-pytorch/tritonbench:${IMAGE_SUFFIX}"
+          DOCKER_IMAGE="ghcr.io/meta-pytorch/tritonbench:${IMAGE_SUFFIX}"
           echo "DOCKER_IMAGE=$DOCKER_IMAGE" >> "$GITHUB_ENV"
           echo "CONDA_ENV=$CONDA_ENV" >> "$GITHUB_ENV"
           echo "Using docker image: $DOCKER_IMAGE "