Translate all static pages to Spanish

[maelle]

For clarification, babeldown would do the first translation! For each translation, I will also need to manually edit HTML templates to add i18n variables.

Outside of the blog, we don't have that much content so it's not a too big endeavor.

Not to translate

• 404
• events? #510
• use cases? #511
• news page? #515

To translate

• [ ] about.md (actually not Markdown content)
• [ ] champions/_index.md
• [x] citations/_index.md
• [x] commcalls/_index.md
• [x] community/_index.md
• [ ] contact/_index.md
• [ ] donate/_index.md
• [ ] help-wanted/_index.md
• [ ] how-to-cite-ropensci.md
• [ ] multilingual-publishing/_index.md
• [ ] packages/_index.md + other Markdown files.
• [ ] papers/_index.md
• [ ] resources/_index.md
• [x] r-universe/_index.md
• [ ] software-review/_index.md

[yabellini]

Yes, I will do the review. :-)

[maelle]

@yabellini reminder that we have this issue. If it is not useful, we can close it.

[yabellini]

It is useful! I will be checking the pages when I get to them.