Spanish translation for "What is a plugin?"

Details

Link to original content: https://learn.wordpress.org/lesson/what-is-a-plugin/
Link to original content's GitHub issue: What is a plugin? #2113
Language you'll be translating to: Spanish (es)
Have you arranged for someone to review this translation?: No
Reviewer's GitHub username: Not assigned yet
Other info: This translation is being prepared as part of the WordPress Credits program. It covers the written content of the lesson "What is a plugin?" and will be submitted for review following the Training Team's localization guidelines. Video subtitles have not yet been translated.

The translated lesson document will be shared for review. Any feedback from the Training Team will be addressed before publication.

@xPolG

Hi @xPolG @sumitsinghwp I have reviewed this translation, and it is complete and accurate!

@roblesloaiza

Thank you so much for review @roblesloaiza 🙌

@xPolG

@xPolG are you happy to draft this lesson?