fix: update broken image links

[b110011]

Problem

https://github.com/pinecone-io/examples/pull/246 broke image links in image retrieval e-books.

Solution

Update broken image links with correct ones.

Type of Change

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update
• [ ] Infrastructure change (CI configs, etc)
• [ ] Non-code change (docs, etc)
• [ ] None of the above: (explain here)

Test Plan

Tested in Colab.

[review-notebook-app[bot]]

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