Add note about Postgres requiring user passwords (#5569)
Add note about Postgres requiring user passwords (#5569)

* Add note about Postgres requiring user passwords

* Clarify wording.

hashicorp/terraform-provider-google,hashicorp/terraform-provider-google,terraform-providers/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google,terraform-providers/terraform-provider-google,hashicorp/terraform-provider-google,terraform-providers/terraform-provider-google,terraform-providers/terraform-provider-google