Update aws-oidc.md to fix typo in hint

[akmal-spacelift]

Description of the change

Checklist

Please make sure that the proposed change checks all the boxes below before requesting a review:

• I have reviewed the guidelines for contributing to this repository.
• The preview looks fine.
• The tests pass.
• The commit history is clean and meaningful.
• The pull request is opened against the main branch.
• The pull request is no longer marked as a draft.
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• You have updated the navigation files correctly:
  • No new pages have been added, or;
  • Only nav.yaml has been updated because the changes only apply to SaaS, or;
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  • Both nav.yaml and nav.self-hosted.yaml have been updated.

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[render]

Your Render PR Server URL is https://spacelift-user-documentation-pr-508.onrender.com.

Follow its progress at https://dashboard.render.com/static/srv-com6397sc6pc738lrg80.

[akmal-spacelift]

Already fixed in a later pr

closing this out