Update recording link in showcase presentation

[avallecam]

current link is broken

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• All authors have an ORCID iD
• Relevant keywords / tags has been added. In particular, if you want your post to be shared on R-bloggers, you must tag it with R
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• The post uses pure quarto syntax, rather than HTML or R code, unless necessary

Right before merging:

• The date field has been updated
• All reviewers have been acknowledged in a short paragraph
• A PR has been opened in the blueprints to link to this post
• The post has been re-rendered and content of the _freeze/ folder is up-to-date

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