adding one more link

Author: bennyvasquez

content/2024-07-03-this-week-in-rust.md

@@ -60,6 +60,7 @@ and just ask the editors to select the category.
 * [Adding compile-time safety to the AWS SDK with syn's Visit trait](https://medium.com/@sam.van.overmeire/adding-compile-time-safety-to-the-aws-sdk-with-syns-visit-trait-57bfbbac8677)
 * [Adding GraphQL Support to Loco with Seaography](https://www.sea-ql.org/blog/2024-07-01-graphql-support-with-loco-seaography/)
 * [Rust patterns: Don't put any code in mod.rs or lib.rs files](https://kerkour.com/rust-patterns-dont-put-code-in-lib-mod-files)
+* [series] [Master Hexagonal Architecture in Rust (part 3): `Service`, the heart of hexagonal architecture](https://www.howtocodeit.com/articles/master-hexagonal-architecture-rust#service-the-heart-of-hexagonal-architecture)
 
 ### Miscellaneous
 * [FizzBuzz Multithreaded - synchronization with rendezvous channels](https://firedbg.sea-ql.org/blog/2024-06-30-fizzbuzz-multithread/)