[Hold] Account updates

[Paul-Cornell]

!!!!! HOLD - COORDINATE WITH STEF ON THE TIMING OF THE MERGE OF THIS PULL REQUEST !!!!!

Updates include:

• New account/pricing tier names and types (Starter, Team, and Enterprise) mentioned throughout.
• How to sign up, sign in, and get your API key and API URLs, based on your account type.
• Updated quickstarts for Platform UI and APIs.
• Light updates to organization account feature how-to's for enterprise accounts.
• Changed mentions of "self-hosted" to "enterprise" throughout.
• Updated when and how to contact Sales versus Support throughout.

See these representative pages:

• How to sign up for a Starter account only and then sign in to the UI: Step 1 only in https://unstructured-53-doc-27-accounts.mintlify.app/welcome#unstructured-ui-quickstart

• How to sign up and then sign in to the UI (any account type): Steps 1 & 2 only in https://unstructured-53-doc-27-accounts.mintlify.app/ui/quickstart

• How to sign up, sign in to the UI, and then get your API key (any account type): Step 1 ("Sign up, sign in, and get your API key"), Items 1-3 only in https://unstructured-53-doc-27-accounts.mintlify.app/api-reference/workflow/overview#quickstart

• Account docs: special notes for Team and Enterprise accounts only (not Starter accounts):

  • First/topmost blue note for API keys and API URLs: https://unstructured-53-doc-27-accounts.mintlify.app/ui/account/api-key-url
  • First/topmost blue note for organizational accounts: https://unstructured-53-doc-27-accounts.mintlify.app/ui/account/organizations
  • First/topmost blue note for workspaces: https://unstructured-53-doc-27-accounts.mintlify.app/ui/account/workspaces
  • First/topmost blue note for roles: https://unstructured-53-doc-27-accounts.mintlify.app/ui/account/roles

• Pricing details: https://unstructured-53-doc-27-accounts.mintlify.app/welcome#pricing

• Enterprise accounts: https://unstructured-53-doc-27-accounts.mintlify.app/enterprise/overview

  • In-VPC for AWS, overview: https://unstructured-53-doc-27-accounts.mintlify.app/enterprise/aws/overview
  • In-VPC for AWS setup, first/topmost blue note and first few paragraphs only: https://unstructured-53-doc-27-accounts.mintlify.app/enterprise/aws/onboard

[ron-unstructured]

LGTM

[ron-unstructured]

LGTM