Merge pull request #1477 from bean5/main

small changes to a few README files

Author: manyinsects

README.md

@@ -18,7 +18,7 @@ Alternatively, for a first-time Rust learner, there are several other resources:
 _Note: If you're on MacOS, make sure you've installed Xcode and its developer tools by typing `xcode-select --install`._
 _Note: If you're on Linux, make sure you've installed gcc. Deb: `sudo apt install gcc`. Yum: `sudo yum -y install gcc`._
 
-You will need to have Rust installed. You can get it by visiting https://rustup.rs. This'll also install Cargo, Rust's package/project manager.
+You will need to have Rust installed. You can get it by visiting <https://rustup.rs>. This'll also install Cargo, Rust's package/project manager.
 
 ## MacOS/Linux
 
@@ -27,6 +27,7 @@ Just run:
 ```bash
 curl -L https://raw.githubusercontent.com/rust-lang/rustlings/main/install.sh | bash
 ```
+
 Or if you want it to be installed to a different path:
 
 ```bash

exercises/threads/README.md

@@ -1,6 +1,6 @@
 # Threads
 
-In most current operating systems, an executed program’s code is run in a process, and the operating system manages multiple processes at once.
+In most current operating systems, an executed program's code is run in a process, and the operating system manages multiple processes at once.
 Within your program, you can also have independent parts that run simultaneously. The features that run these independent parts are called threads.
 
 ## Further information