[Spanish] localize 'Immutable Infrastructure'

[tinniaru3005]

Describe your changes

Localize the content/en/immutable-infrastructure.md document to Spanish

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

resolves #1377 Closes #1377

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".

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[tinniaru3005]

Hey @electrocucaracha, I closed the previous PR and made it again. Can you please tell me if it is okay or if not, which step has to be done differently? I am a bit confused about the branches and how to do them. As it is related to language, I am making the changes directly on GitHub and not cloning it.

[seokho-son]

The commit https://github.com/cncf/glossary/pull/1383/commits/51891a282d8ea01ba40a178db2266c6d145847a5 in this PR needs to be removed :)

[tinniaru3005]

Hey @electrocucaracha, are the changes fine now?

[electrocucaracha]

Hey @electrocucaracha, are the changes fine now?

I think those changes are fine now. Unfortunately, I can merge them given that I co-authored this, but @raelga @krol3 or @92nqb can take a look