Merge branch 'tchu-update-each_batch_range-example-in-docs' into 'master'

Update each_batch_range example in dev docs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/184340



Merged-by: Terri Chu <tchu@gitlab.com>
Approved-by: Fabien Catteau <fcatteau@gitlab.com>