[docs] improve description of "crates"

doc/en/dev/setup-your-dev-environment.md

@@ -146,7 +146,7 @@ Before changing the code, make sure that the default code compiles correctly:
     Compiling hello-world v0.1.0 (file:///home/elois/dev/hello-world)
     Finished dev [unoptimized + debuginfo] target(s) in 0.91 secs
 
-Cargo is the equivalent of npm for Rust, it will look for all the dependencies of the crates (=libraries) you install. Yes in Rust we speak of crates to designate dependencies, it can be a library or a package.  
+Cargo is the equivalent of npm for Rust, it will look for all the dependencies of the crates you install. In Rust a "crate" refers to any library or package. It's comparable to Python wheels, Java archive, Ruby gems...
 
 If you get a `Finished dev[unoptimized + debuginfo] target(s) in x.xx secs`, congratulations you just compiled your first Rust program :)