FIX: IT repo updated

Old repository, by Ciro Fusco, has been deleted. I opened a new one to start a new translation and I just updated the link.

src/appendix-06-translation.md

@@ -11,7 +11,7 @@ For resources in languages other than English. Most are still in progress; see
 - [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)
-- [Italiano](https://github.com/Ciro-Fusco/book_it)
+- [Italiano](https://github.com/EmanueleGurini/book_it)
 - [Русский](https://github.com/rust-lang-ru/book)
 - [한국어](https://github.com/rinthel/rust-lang-book-ko)
 - [日本語](https://github.com/rust-lang-ja/book-ja)