Russian translation: could you add a link? #288

Hi! 👋

My name is Sergey. I've translated Embedded Rust on Espressif (std) into Russian, and it's online here:

https://r007.github.io/EmbeddedRust-Rus/std-training/

The source is in my repo: https://github.com/r007/EmbeddedRust-Rus/tree/main/std-training

What I did:

• Translated the book text into Russian. Code, crate names, commands and log output stay in English.
• Kept Anatol Ulrich and Sergio Gasquez credited, and kept the original licenses (CC BY-SA 4.0 for the text, MIT or Apache-2.0 for the code) in the book's folder.

Would you be willing to add a link to it in your README? For example:

* [Russian](https://r007.github.io/EmbeddedRust-Rus/std-training/)

Thank you so much for this training material, and thanks in advance for considering it!

Sergey