fix: ubuntu/debian apt install message

[EmilyG2413]

Description

Added the necessary instructions as described in the issue to start the daemon.

Related issues or tickets

Git issue: #19933

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[docker-robot]

Thanks for the pull request. We'd like to make our product docs better, but haven’t been able to review all the suggestions.
As our docs have also diverged, we do not have the bandwidth to review and rebase old pull requests.

If the updates are still relevant, review our contribution guidelines and rebase your pull request against the latest version of the docs, then mark it as fresh with a /remove-lifecycle stale comment.
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/lifecycle stale

[dvdksn]

The engine should start automatically when you install using the apt package. If this isn't what you're seeing, may I ask what version of Ubuntu or Debian you're using?