change placeholder url in attribution details to example.com

[possumbilities]

Description

• Fixes Change default placeholder URL to example.com within UX #588
• instances of creativecommons.org within Attribution Details placeholder data have been updated to instead be example.com

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

Developer Certificate of Origin

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Developer Certificate of Origin

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Everyone is permitted to copy and distribute verbatim copies of this
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By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
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(b) The contribution is based upon previous work that, to the best
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[Shafiya-Heena]

Thank you!