Replace blacklist/whitelist in doc//development/insert_into_tables_in_batches.md

URL: https://docs.gitlab.com/ee/development/insert_into_tables_in_batches.html

grep -R -E 'whitelist|blacklist' doc/development/insert_into_tables_in_batches.md

doc/development/insert_into_tables_in_batches.md:Consult the module source code for details. If your class uses any of the blacklisted