[Core] Quickstart for dbt Core from a manual install

[bkowshik]

Link to the page(s) on docs.getdbt.com requiring updates

https://docs.getdbt.com/guides/manual-install?step=8

Tell us more about this update

Out of the blue, the following show up without any reference to how to create them in previous documentation pages.

• Database: raw
• Schema: jaffle_shop
• Table: customers

I could create the database and the schema but table creation would require the schema, etc.

Reviewers/Stakeholders/SMEs

dbt-core

Related GitHub issues

No response

Additional information

Used the following schema for now and proceeded with the tutorial.

CREATE TABLE analytics.jaffle_shop.customers (
    id INT PRIMARY KEY,
    first_name VARCHAR(255),
    last_name VARCHAR(255)
);

CREATE TABLE analytics.jaffle_shop.orders (
    id INT PRIMARY KEY,
    user_id INT,
    order_date DATE,
    status VARCHAR(50)
);