add rustlanges book translation

src/appendix-06-translation.md

@@ -10,7 +10,7 @@ For resources in languages other than English. Most are still in progress; see
 - [简体中文](https://github.com/KaiserY/trpl-zh-cn)
 - [正體中文](https://github.com/rust-tw/book-tw)
 - [Українська](https://github.com/pavloslav/rust-book-uk-ua)
-- [Español](https://github.com/thecodix/book), [alternate](https://github.com/ManRR/rust-book-es)
+- [Español](https://github.com/thecodix/book), [alternate](https://github.com/ManRR/rust-book-es), [Español por RustLangES](https://github.com/RustLangES/book)
 - [Italiano](https://github.com/EmanueleGurini/book_it)
 - [Русский](https://github.com/rust-lang-ru/book)
 - [한국어](https://github.com/rinthel/rust-lang-book-ko)