DOC: fix doctests to for new public repo

[hagenw]

In #450 we switched to a new default public repo on S3, but we haven't updated the doctests accordingly.

Summary by Sourcery

Documentation:

• Update doctests in the documentation to reflect the new default public repository on S3.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR updates documentation files to reflect changes in the default public repository location on S3. The changes primarily involve updating doctests to match the new repository structure.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Update documentation to reflect new default public repository	Modify doctests to use the new S3 repository location Update examples and code snippets to match the new repository structure	docs/configuration.rst docs/quickstart.rst

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[sourcery-ai]

Hey @hagenw - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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