fix(docs): cli upload json format example

[leepeuker]

Description

The docs about how to handle the json output of the cli upload seem to be outdated, at least during my testing I had to use +6 instead of +4.

The cli command I did run:

docker run -it -v /XXX:/import:ro -e IMMICH_INSTANCE_URL=https://immich.XXX.dev/api -e IMMICH_API_KEY=XXX ghcr.io/immich-app/immich-cli:latest  upload --dry-run  --recursive /import -j  | tail -n +6 | jq .newFiles[].filepath

[github-actions]

Label error. Requires exactly 1 of: changelog:.*. Found: . A maintainer will add the required label.