Replace local URL for RightsCon talk with link to archive.org

[CoralineAda]

What does the PR accomplish?

• Link to a higher-quality video of the RightsCon 2022 talk

Interesting bits

• We'll need to keep the local, low-quality video for a while, because it is referenced by URL in a grantee report

What I need help with

• If someone wants to look at rewrite rules on netlify, we may be able to redirect the previous url

[netlify[bot]]

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