rename docker repo (#1702)

.github/workflows/publish-docker.yml

@@ -15,6 +15,6 @@ jobs:
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-          repository: excalidraw/excalidraw
+          repository: getexcalidraw/excalidraw
           tag_with_ref: true
           tag_with_sha: true