translate: adding interactivity to spanish (#698)

* translate: adding interactivity to spanish

* fixing pr comments

* Update adding-interactivity.md

* Update adding-interactivity.md

* fix missing heading

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Co-authored-by: Rainer Martinez <rmartinezfraga@gmail.com>
Co-authored-by: Rainer Martinez <rmartinezfraga@yandex.com>

Author: joelnbl