correction: multithreaded, but not asynchronous

[amab8901]

This is not asynchronous, since you haven't actually used the async/await syntax. You have multiple threads (thus multithreaded) but each thread doesn't encounter a Future with missing values that makes the thread go do something else while waiting for the value to become available.

I'm not sure if I wrote this syntax correctly: [async-book]: https://rust-lang.github.io//01_getting_started/01_chapter.html

Maybe there's a better way to write this link?

[amab8901]

I don't know why the lint thinks that "multithreading" isn't a valid word. Perhaps add to dictionary?