[Spanish] localize 'Idempotence'

[tinniaru3005]

Describe your changes

• Converted idempotence.md to Spanish
• Added the new words to .wordlist.txt

Related issue number or link (ex: resolves #issue-number)

resolves #1376 Closes #1376

Checklist before opening this PR (put x in the checkboxes)

• [x] This PR does not contain plagiarism
  • don’t copy other people’s work unless you are quoting and contributing it to them.
• [x] I have signed off on all commits
  • signing off (ex: git commit -s) is to affirm that commits comply DCO. If you are working locally, you could add an alias to your gitconfig by running git config --global alias.ci "commit -s".

[netlify[bot]]

✅ Deploy Preview for cncfglossary ready!

Name	Link
🔨 Latest commit	dd19193f558c358ea586e1990b935e85b91f9a64
🔍 Latest deploy log	https://app.netlify.com/sites/cncfglossary/deploys/634ec6cb24ff710008daffe4
😎 Deploy Preview	https://deploy-preview-1382--cncfglossary.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[tinniaru3005]

Hey @electrocucaracha. Can you please tell me if it is fine now?

[electrocucaracha]

I sent you a PR with the only commit, need it for this. I think if you merge it in your branch, this will fix it.

[tinniaru3005]

I sent you a PR with the only commit, need it for this. I think if you merge it in your branch, this will fix it.

Hey @electrocucaracha, I did it. Thank you so much for the help. :)

[electrocucaracha]

@raelga @krol3 @92nqb could you take a look this PR? It seems to be ready for review.