[docs] AI providers: Add minimal configuration (MDL-83381)

[davewoloszyn]

No description provided.

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[davewoloszyn]

Just adding in a small section to the AI plugins -> Providers section.

[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟠 61	🟢 95	🟢 100	🟢 90	🟢 100	Report
/docs/4.4/apis/commonfiles	🟠 57	🟢 93	🟢 100	🟢 100	🟢 100	Report
/general/development/gettingstarted	🟠 64	🟢 95	🟢 100	🟢 90	🟢 100	Report
/general/releases	🟠 65	🟢 95	🟢 100	🟢 100	🟢 100	Report

[HuongNV13]

Thanks, David.
LGTM