Adding missing Spanish translations

[RicJDev]

Closes #1530

This PR updates the Spanish translation in this file. I added translations for all previously missing keys (replacing undefined values) with accurate Spanish equivalents.

[CLAassistant]

All committers have signed the CLA.

[jelveh]

Thank you @RicJDev for this awesome PR. Could you take a quick look at the CLA before I can review and merge your contribution?

[RicJDev]

Done!

[jelveh]

Thanks!

I used AI to do a quick review and it gave me this list of improvements, is there any merit to them?

Grammar and spelling errors:

• "Ocurrrió un error" → should be "Ocurrió un error" (one 'r')
• "Sitio web Asocioado" → should be "Sitio web Asociado"
• "Sitios web Asocioados" → should be "Sitios web Asociados"
• "No se econtraron" → should be "No se encontraron"

Consistency issues:

• Mixed use of "Correo electrónico" vs "Email" - stick to one approach
• Some items use title case, others don't - standardize capitalization

[RicJDev]

Well... a lot of typos. Sorry 🥲

[RicJDev]

I tried to keep the same capitalization from the English translations. But I admit those typos 🥲

[jelveh]

No worries! I'll be watching this and once the typos are fixed I'll merge 👍

[jelveh]

Thank you!