Issue-3711 links

[anisa-hawes]

Replacing broken links across the following pages:

• es/lecciones/introduccion-a-imageplot-y-la-visualizacion-de-metadatos
• es/lecciones/analisis-voyant-tools
• en/lessons/corpus-analysis-voyant-tools
• es/lecciones/datos-abiertos-enlazados-wikidata
• en/lessons/introduction-to-populating-a-website-with-api-data
• es/guia-editor

Closes #3711

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[jenniferisasi]

I continue to be thankful and, importantly, IMPRESSED at your ability to find new URLs to broken ones!

[anisa-hawes]

Gracias, @jenniferisasi!

I remain baffled as to why these DOIs are failing 😞

I've been testing the limits of Perma.cc today... attempting to archive PDFs of Elsevier articles. Alas, they have blocked us doing that, even for OA content.