My "Thank You" offering to you

I'm loving the System.CommandLine package, and I've teaching it for the first time in my Programming Fundamentals class (post-secondary). **Thank You!**

I'm building up a good tutorial for absolute beginners to use. Here's a PDF of one of my documents that I thought I would share with you (and the community).

[Specs-Day-3.pdf](https://github.com/dotnet/command-line-api/files/10112219/Specs-Day-3.pdf)

p.s. - If you like my work and think it can be helpful on Microsoft Learn or some other place, I'm quite happy to share. Just let me know what you would need for me to contribute. *Thanks again!*

Comienza revisando la Specs-Day-3.pdf enlazada para entender el contenido del tutorial y su relación con System.CommandLine. El issue no identifica una ubicación para la documentación ni un cambio concreto; para darlo por terminado, los maintainers tendrían que definir si este material debe incorporarse y dónde.

Escrito por el modelo de indexación a partir del texto del issue.