Docs feedback: "non-packaged PostgreSQL database" should refer to external docs

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This documentation:

https://docs.gitlab.com/omnibus/settings/database.html#using-a-non-packaged-postgresql-database-management-server

... seem to show how to connect GitLab to an external database server, but it's really missing a lot of information, for example how to create the database or grant it access.

It seems to be duplicating this guide: https://docs.gitlab.com/ee/administration/postgresql/external.html

... somehow those two should merge, I believe.

Edited by 🤖 GitLab Bot 🤖