response files: correct component element, remove github as no longer a valid id

[dpvreony]

Greetings

• This changes the response.json samples to have "components" instead of "add"
• it also removes the github component as it's no longer valid

Thanks

[prmerger-automator]

@dpvreony : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 5631609:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/install/automated-installation-with-response-file.md	✅Succeeded

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[v-regandowner]

@anandmeg - Can you review the proposed changes?

IMPORTANT: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team