Add High Assurance Rust (fix #224)

Author: ctjhoa

README.md

@@ -106,6 +106,7 @@ The main documentation is always the best beginning, so if you haven't read it y
 * [Comprehensive Rust](https://google.github.io/comprehensive-rust/) - Google
 * [Rust Atomics and Locks](https://learning.oreilly.com/library/view/-/9781098119430/) - Mara Bos
 * [Command-Line Rust](https://www.oreilly.com/library/view/command-line-rust/9781098109424/) - Ken Youens-Clark
+* [High Assurance Rust: Developing Secure and Robust Software](https://highassurance.rs/) - Tiemoko Ballo
 
 ## Videos