fix: typo in gen-docker-compose-workspace-env.sh line 249

Author: arinanto

.devcontainer/gen-docker-compose-workspace-env.sh

@@ -246,7 +246,7 @@ if workspace_is_in_container_volume; then
  # as an external volume using the value of WORKSPACE_CONTAINER_VOLUME_SOURCE.
  WORKSPACE_SOURCE="devcontainer-volume"
  WORKSPACE_TARGET="$WORKSPACE_CONTAINER_VOLUME_TARGET"
- WORKSPACE_ROOT="${LOCAL_WORKSPACE_FOLDER?:}"
+ WORKSPACE_ROOT="${LOCAL_WORKSPACE_FOLDER:?}"
  WORKSPACE_IS_CONTAINER_VOLUME=true
  WORKSPACE_IS_BIND_MOUNT=false
 else