review integrations content

[edublancas]

We've recently added a lot of integrations to our documentation

We need to ensure they're all consistent: same sections, same titles.

We can use the postgres one as a reference: https://jupysql.ploomber.io/en/latest/integrations/postgres-connect.html

• Note that some sections might be db-specific, e.g., Executing meta-commands in the postgres guide.
• Also, some of the sections are missing in some dbs because the db is not compatible, it's fine to leave it out in those cases