Improve user experience in Get Started guide for NGF

[shaun-nx]

Closes #788

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[github-actions]

✅ All required contributors have signed the F5 CLA for this PR. Thank you!
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[shaun-nx]

I have hereby read the F5 CLA and agree to its terms

[github-actions]

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[ADubhlaoich]

LGTM! Please keep conventional commits in mind when merging this for the sake of a correctly formatted title.

[ADubhlaoich]

Still generally LGTM: edit suggestions to make the explanations of the command output sequential and more concise.