Correct typing error

[anisa-hawes]

I am correcting a typing error in introduccion-datos-abiertos-enlazados.md. Closes #2142

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[rivaquiroga]

@Anisa-ProgHist, I already fixed in #2077 the broken links that are making the build failing. Once we merge that PR everything should be working here

[rivaquiroga]

@Anisa-ProgHist, I merged the changes from the other branch in here, so now the build is working.
This is ready to be merged 🚀